diff --git a/src/App/AppEffects.h b/src/App/AppEffects.h
index 32d6f9dc..1972e145 100644
--- a/src/App/AppEffects.h
+++ b/src/App/AppEffects.h
@@ -1,7 +1,7 @@
 /*
    @title     StarMod
    @file      AppEffects.h
-   @date      20240226
+   @date      20240227
    @repo      https://github.com/ewowi/StarMod
    @Authors   https://github.com/ewowi/StarMod/commits/main
    @Copyright © 2024 Github StarMod Commit Authors
@@ -32,7 +32,7 @@ class Effect {
   virtual void controls(JsonObject parentVar, Leds &leds) {}
 
   void addPalette(JsonObject parentVar, uint8_t value) {
-    //currentVar["value"][parentRowNr] will be set to value parameter
+    //currentVar["value"][contextRowNr] will be set to value parameter
     JsonObject currentVar = ui->initSelect(parentVar, "pal", value, false, [](JsonObject var, uint8_t rowNr, uint8_t funType) { switch (funType) { //varFun
       case f_UIFun: {
         ui->setLabel(var, "Palette");
@@ -45,16 +45,15 @@ class Effect {
         options.add("RainbowStripeColors");
         options.add("PartyColors");
         options.add("HeatColors");
-        return true;
-      }
+        return true; }
       default: return false;
     }});
     //tbd: check if memory is freed!
     currentVar["stage"] = true;
   }
 
-  CRGBPalette16 getPalette(uint8_t rowNr) {
-    switch (mdl->getValue("pal", rowNr).as<uint8_t>()) {
+  CRGBPalette16 getPalette() {
+    switch (mdl->getValue("pal").as<uint8_t>()) {
       case 0: return CloudColors_p; break;
       case 1: return LavaColors_p; break;
       case 2: return OceanColors_p; break;
@@ -74,9 +73,10 @@ class SolidEffect: public Effect {
     return "Solid 1D";
   }
   void loop(Leds &leds) {
-    uint8_t red = mdl->getValue("Red", leds.rowNr);
-    uint8_t green = mdl->getValue("Green", leds.rowNr);
-    uint8_t blue = mdl->getValue("Blue", leds.rowNr);
+    uint8_t red = mdl->getValue("Red");
+    uint8_t green = mdl->getValue("Green");
+    uint8_t blue = mdl->getValue("Blue");
+
     CRGB color = CRGB(red, green, blue);
     leds.fill_solid(color);
   }
@@ -124,7 +124,7 @@ class SinelonEffect: public Effect {
   void loop(Leds &leds) {
     // a colored dot sweeping back and forth, with fading trails
     leds.fadeToBlackBy(20);
-    int pos = beatsin16( mdl->getValue("BPM", leds.rowNr).as<int>(), 0, leds.nrOfLeds-1 );
+    int pos = beatsin16( mdl->getValue("BPM").as<int>(), 0, leds.nrOfLeds-1 );
     leds[pos] = leds.getPixelColor(pos) + CHSV( gHue, 255, 192);
   }
   void controls(JsonObject parentVar, Leds &leds) {
@@ -140,9 +140,9 @@ class RunningEffect: public Effect {
   }
   void loop(Leds &leds) {
     // a colored dot sweeping back and forth, with fading trails
-    leds.fadeToBlackBy(mdl->getValue("fade", leds.rowNr).as<int>()); //physical leds
-    int pos = map(beat16( mdl->getValue("BPM", leds.rowNr).as<int>()), 0, uint16_t(-1), 0, leds.nrOfLeds-1 ); //instead of call%leds.nrOfLeds
-    // int pos2 = map(beat16( mdl->getValue("BPM", leds.rowNr).as<int>(), 1000), 0, uint16_t(-1), 0, leds.nrOfLeds-1 ); //one second later
+    leds.fadeToBlackBy(mdl->getValue("fade").as<int>()); //physical leds
+    int pos = map(beat16( mdl->getValue("BPM").as<int>()), 0, uint16_t(-1), 0, leds.nrOfLeds-1 ); //instead of call%leds.nrOfLeds
+    // int pos2 = map(beat16( mdl->getValue("BPM").as<int>(), 1000), 0, uint16_t(-1), 0, leds.nrOfLeds-1 ); //one second later
     leds[pos] = CHSV( gHue, 255, 192); //make sure the right physical leds get their value
     // leds[leds.nrOfLeds -1 - pos2] = CHSV( gHue, 255, 192); //make sure the right physical leds get their value
   }
@@ -178,7 +178,7 @@ class BPMEffect: public Effect {
   }
 
   void loop(Leds &leds) {
-    CRGBPalette16 pal = getPalette(leds.rowNr);
+    CRGBPalette16 pal = getPalette();
 
     // colored stripes pulsing at a defined Beats-Per-Minute (BPM)
     uint8_t BeatsPerMinute = 62;
@@ -214,7 +214,7 @@ class Ripples3DEffect: public Effect {
     return "Ripples 3D";
   }
   void loop(Leds &leds) {
-    uint8_t interval = mdl->getValue("interval", leds.rowNr);
+    uint8_t interval = mdl->getValue("interval");
 
     float ripple_interval = 1.3 * (interval/128.0);
 
@@ -283,9 +283,9 @@ class Frizzles2D: public Effect {
   void loop(Leds &leds) {
     leds.fadeToBlackBy(16);
 
-    uint16_t bpm = mdl->getValue("BPM", leds.rowNr);
-    uint16_t intensity = mdl->getValue("intensity", leds.rowNr);
-    CRGBPalette16 pal = getPalette(leds.rowNr);
+    uint16_t bpm = mdl->getValue("BPM");
+    uint16_t intensity = mdl->getValue("intensity");
+    CRGBPalette16 pal = getPalette();
 
     for (size_t i = 8; i > 0; i--) {
       Coord3D pos = {0,0,0};
@@ -294,7 +294,7 @@ class Frizzles2D: public Effect {
       CRGB color = ColorFromPalette(pal, beatsin8(12, 0, 255), 255);
       leds[pos] = color;
     }
-    leds.blur2d(mdl->getValue("blur", leds.rowNr));
+    leds.blur2d(mdl->getValue("blur"));
   }
 
   void controls(JsonObject parentVar, Leds &leds) {
@@ -315,14 +315,14 @@ class Lines2D: public Effect {
     leds.fadeToBlackBy(100);
 
     Coord3D pos = {0,0,0};
-    if (mdl->getValue("Vertical", leds.rowNr).as<bool>()) {
-      pos.x = map(beat16( mdl->getValue("BPM", leds.rowNr).as<int>()), 0, uint16_t(-1), 0, leds.size.x-1 ); //instead of call%width
+    if (mdl->getValue("Vertical").as<bool>()) {
+      pos.x = map(beat16( mdl->getValue("BPM").as<int>()), 0, uint16_t(-1), 0, leds.size.x-1 ); //instead of call%width
 
       for (pos.y = 0; pos.y <  leds.size.y; pos.y++) {
         leds[pos] = CHSV( gHue, 255, 192);
       }
     } else {
-      pos.y = map(beat16( mdl->getValue("BPM", leds.rowNr).as<int>()), 0, uint16_t(-1), 0, leds.size.y-1 ); //instead of call%height
+      pos.y = map(beat16( mdl->getValue("BPM").as<int>()), 0, uint16_t(-1), 0, leds.size.y-1 ); //instead of call%height
       for (pos.x = 0; pos.x <  leds.size.x; pos.x++) {
         leds[pos] = CHSV( gHue, 255, 192);
       }
@@ -348,8 +348,8 @@ class DistortionWaves2D: public Effect {
 
   void loop(Leds &leds) {
 
-    uint8_t speed = mdl->getValue("speed", leds.rowNr).as<uint8_t>()/32;
-    uint8_t scale = mdl->getValue("scale", leds.rowNr).as<uint8_t>()/32;
+    uint8_t speed = mdl->getValue("speed").as<uint8_t>()/32;
+    uint8_t scale = mdl->getValue("scale").as<uint8_t>()/32;
 
     uint8_t  w = 2;
 
@@ -412,11 +412,14 @@ class Octopus2D: public Effect {
 
     const uint8_t mapp = 180 / max(leds.size.x,leds.size.y);
 
-    uint8_t speed = mdl->getValue("speed", leds.rowNr);
-    uint8_t offsetX = mdl->getValue("Offset X", leds.rowNr);
-    uint8_t offsetY = mdl->getValue("Offset Y", leds.rowNr);
-    uint8_t legs = mdl->getValue("Legs", leds.rowNr);
-    CRGBPalette16 pal = getPalette(leds.rowNr);
+    // uint8_t *speed2 = leds.sharedData.bind(speed2);
+    // // USER_PRINTF(" %d:%d", speed2, *speed2);
+    
+    uint8_t speed = mdl->getValue("speed");
+    uint8_t offsetX = mdl->getValue("Offset X");
+    uint8_t offsetY = mdl->getValue("Offset Y");
+    uint8_t legs = mdl->getValue("Legs");
+    CRGBPalette16 pal = getPalette();
 
     map_t    *rMap = leds.sharedData.bind(rMap, leds.size.x * leds.size.y); //array
     uint8_t *offsX = leds.sharedData.bind(offsX);
@@ -444,7 +447,7 @@ class Octopus2D: public Effect {
       }
     }
 
-    *step = now * speed / 32 / 10;//mdl->getValue("realFps", leds.rowNr).as<int>();  // WLEDMM 40fps
+    *step = now * speed / 32 / 10;//mdl->getValue("realFps").as<int>();  // WLEDMM 40fps
 
     for (pos.x = 0; pos.x < leds.size.x; pos.x++) {
       for (pos.y = 0; pos.y < leds.size.y; pos.y++) {
@@ -459,8 +462,25 @@ class Octopus2D: public Effect {
     }
   }
   void controls(JsonObject parentVar, Leds &leds) {
+
+    //bind the variables to sharedData...
+    // uint8_t *speed2 = leds.sharedData.bind(speed2);
+    // USER_PRINTF("(bind %d) %d %d\n", speed2, leds.sharedData.index, leds.sharedData.bytesAllocated);
+    // USER_PRINTF("bind %d->%d %d\n", index, newIndex, bytesAllocated);
+
+    //if changeValue then update the linked variable...
+
     addPalette(parentVar, 4);
-    ui->initSlider(parentVar, "speed", 128, 1, 255); //start with speed 1
+
+    ui->initSlider(parentVar, "speed", 128, 1, 255);
+    // , false, [leds](JsonObject var, uint8_t rowNr, uint8_t funType) { switch (funType) { //varFun
+    //   case f_ChangeFun: {
+    //       uint8_t *speed2 = leds.sharedData.data+0;
+    //       USER_PRINTF("%s[%d] chFun = %s (bind %d)\n", mdl->varID(var), rowNr, var["value"].as<String>().c_str(), speed2);
+    //       *speed2 = var["value"][rowNr];
+    //     return true; }
+    //   default: return false;
+    // }});
     ui->initSlider(parentVar, "Offset X", 128);
     ui->initSlider(parentVar, "Offset Y", 128);
     ui->initSlider(parentVar, "Legs", 4, 1, 8);
@@ -476,11 +496,11 @@ class Lissajous2D: public Effect {
 
   void loop(Leds &leds) {
 
-    uint8_t freqX = mdl->getValue("X frequency", leds.rowNr);
-    uint8_t fadeRate = mdl->getValue("Fade rate", leds.rowNr);
-    uint8_t speed = mdl->getValue("speed", leds.rowNr);
-    bool smooth = mdl->getValue("Smooth", leds.rowNr);
-    CRGBPalette16 pal = getPalette(leds.rowNr);
+    uint8_t freqX = mdl->getValue("X frequency");
+    uint8_t fadeRate = mdl->getValue("Fade rate");
+    uint8_t speed = mdl->getValue("speed");
+    bool smooth = mdl->getValue("Smooth");
+    CRGBPalette16 pal = getPalette();
 
     leds.fadeToBlackBy(fadeRate);
 
@@ -536,9 +556,9 @@ class BouncingBalls1D: public Effect {
   }
 
   void loop(Leds &leds) {
-    uint8_t grav = mdl->getValue("gravity", leds.rowNr);
-    uint8_t numBalls = mdl->getValue("balls", leds.rowNr);
-    CRGBPalette16 pal = getPalette(leds.rowNr);
+    uint8_t grav = mdl->getValue("gravity");
+    uint8_t numBalls = mdl->getValue("balls");
+    CRGBPalette16 pal = getPalette();
 
     Ball *balls = leds.sharedData.bind(balls, maxNumBalls); //array
 
@@ -635,9 +655,9 @@ class ScrollingText2D: public Effect {
   }
 
   void loop(Leds &leds) {
-    uint8_t speed = mdl->getValue("speed", leds.rowNr);
-    uint8_t font = mdl->getValue("font", leds.rowNr);
-    const char * text = mdl->getValue("text", leds.rowNr);
+    uint8_t speed = mdl->getValue("speed");
+    uint8_t font = mdl->getValue("font");
+    const char * text = mdl->getValue("text");
 
     // text might be nullified by selecting other effects and if effect is selected, controls are run afterwards  
     // tbd: this should be removed and setEffect must make sure this cannot happen!!
@@ -673,12 +693,12 @@ class Waverly2D: public Effect {
   }
 
   void loop(Leds &leds) {
-    CRGBPalette16 pal = getPalette(leds.rowNr);
-    uint8_t amplification = mdl->getValue("Amplification", leds.rowNr);
-    uint8_t sensitivity = mdl->getValue("Sensitivity", leds.rowNr);
-    bool noClouds = mdl->getValue("No Clouds", leds.rowNr);
-    // bool soundPressure = mdl->getValue("Sound Pressure", leds.rowNr);
-    // bool agcDebug = mdl->getValue("AGC debug", leds.rowNr);
+    CRGBPalette16 pal = getPalette();
+    uint8_t amplification = mdl->getValue("Amplification");
+    uint8_t sensitivity = mdl->getValue("Sensitivity");
+    bool noClouds = mdl->getValue("No Clouds");
+    // bool soundPressure = mdl->getValue("Sound Pressure");
+    // bool agcDebug = mdl->getValue("AGC debug");
 
     leds.fadeToBlackBy(amplification);
     // if (agcDebug && soundPressure) soundPressure = false;                 // only one of the two at any time
@@ -730,10 +750,10 @@ class PopCorn1D: public Effect {
   }
 
   void loop(Leds &leds) {
-    CRGBPalette16 pal = getPalette(leds.rowNr);
-    uint8_t speed = mdl->getValue("speed", leds.rowNr);
-    uint8_t intensity = mdl->getValue("intensity", leds.rowNr);
-    bool useaudio = mdl->getValue("useaudio", leds.rowNr);
+    CRGBPalette16 pal = getPalette();
+    uint8_t speed = mdl->getValue("speed");
+    uint8_t intensity = mdl->getValue("intensity");
+    bool useaudio = mdl->getValue("useaudio");
 
     Spark *popcorn = leds.sharedData.bind(popcorn, maxNumPopcorn); //array
 
@@ -820,11 +840,11 @@ class GEQEffect:public Effect {
     uint8_t samplePeak = *(uint8_t*)um_data->u_data[3];
     #endif
 
-    uint8_t fadeOut = mdl->getValue("fadeOut", leds.rowNr);
-    uint8_t ripple = mdl->getValue("ripple", leds.rowNr); 
-    bool colorBars = mdl->getValue("colorBars", leds.rowNr);
-    bool smoothBars = mdl->getValue("smoothBars", leds.rowNr);
-    CRGBPalette16 pal = getPalette(leds.rowNr);
+    uint8_t fadeOut = mdl->getValue("fadeOut");
+    uint8_t ripple = mdl->getValue("ripple"); 
+    bool colorBars = mdl->getValue("colorBars");
+    bool smoothBars = mdl->getValue("smoothBars");
+    CRGBPalette16 pal = getPalette();
 
     bool rippleTime = false;
     if (now - *step >= (256U - ripple)) {
@@ -923,11 +943,11 @@ class AudioRings:public RingEffect {
   }
 
   void loop(Leds &leds) {
-    CRGBPalette16 pal = getPalette(leds.rowNr);
+    CRGBPalette16 pal = getPalette();
     for (int i = 0; i < 7; i++) { // 7 rings
 
       uint8_t val;
-      if(mdl->getValue("inWards", leds.rowNr).as<bool>()) {
+      if(mdl->getValue("inWards").as<bool>()) {
         val = wledAudioMod->fftResults[(i*2)];
       }
       else {
@@ -975,11 +995,11 @@ class FreqMatrix:public Effect {
 
     uint8_t *aux0 = leds.sharedData.bind(aux0);
 
-    uint8_t speed = mdl->getValue("speed", leds.rowNr);
-    uint8_t fx = mdl->getValue("Sound effect", leds.rowNr);
-    uint8_t lowBin = mdl->getValue("Low bin", leds.rowNr);
-    uint8_t highBin = mdl->getValue("High bin", leds.rowNr);
-    uint8_t sensitivity10 = mdl->getValue("Sensivity", leds.rowNr);
+    uint8_t speed = mdl->getValue("speed");
+    uint8_t fx = mdl->getValue("Sound effect");
+    uint8_t lowBin = mdl->getValue("Low bin");
+    uint8_t highBin = mdl->getValue("High bin");
+    uint8_t sensitivity10 = mdl->getValue("Sensivity");
 
     uint8_t secondHand = (speed < 255) ? (micros()/(256-speed)/500 % 16) : 0;
     if((speed > 254) || (*aux0 != secondHand)) {   // WLEDMM allow run run at full speed
@@ -1120,9 +1140,11 @@ class Effects {
 
       Effect* effect = effects[leds.fx];
 
-      ui->parentRowNr = rowNr;
+      mdl->contextRowNr = rowNr;
+      // effect->loop(leds); //do a loop to set sharedData right
+      // leds.sharedData.loop();
       effect->controls(var, leds); //new controls have positive order (var["o"])
-      ui->parentRowNr = UINT8_MAX;
+      mdl->contextRowNr = UINT8_MAX;
 
       effect->setup(leds); //if changed then run setup once (like call==0 in WLED)
 
diff --git a/src/App/AppFixture.cpp b/src/App/AppFixture.cpp
index f3ee282b..e51c463f 100644
--- a/src/App/AppFixture.cpp
+++ b/src/App/AppFixture.cpp
@@ -1,7 +1,7 @@
 /*
    @title     StarMod
    @file      AppFixture.cpp
-   @date      20240226
+   @date      20240227
    @repo      https://github.com/ewowi/StarMod
    @Authors   https://github.com/ewowi/StarMod/commits/main
    @Copyright © 2024 Github StarMod Commit Authors
@@ -12,7 +12,7 @@
 #include "AppFixture.h"
 
 #include "../Sys/SysModFiles.h"
-#include "../Sys/SysJsonRDWS.h"
+#include "../Sys/SysStarModJson.h"
 #include "../Sys/SysModPins.h"
 
 Coord3D map1Dto2D(Coord3D in) {
@@ -36,7 +36,7 @@ Coord3D map2Dto2D(Coord3D in) {
     char fileName[32] = "";
 
     if (files->seqNrToName(fileName, fixtureNr)) {
-      JsonRDWS jrdws(fileName); //open fileName for deserialize
+      StarModJson starModJson(fileName); //open fileName for deserialize
 
       for (std::vector<Leds>::iterator leds=ledsList.begin(); leds!=ledsList.end() && leds->doMap; ++leds) {
         //vectors really gone now?
@@ -59,14 +59,14 @@ Coord3D map2Dto2D(Coord3D in) {
       bool first = true;
 
       //what to deserialize
-      jrdws.lookFor("width", &size.x);
-      jrdws.lookFor("height", &size.y);
-      jrdws.lookFor("depth", &size.z);
-      jrdws.lookFor("nrOfLeds", &nrOfLeds);
-      jrdws.lookFor("pin", &currPin);
+      starModJson.lookFor("width", &size.x);
+      starModJson.lookFor("height", &size.y);
+      starModJson.lookFor("depth", &size.z);
+      starModJson.lookFor("nrOfLeds", &nrOfLeds);
+      starModJson.lookFor("pin", &currPin);
 
       //lookFor leds array and for each item in array call lambdo to make a projection
-      jrdws.lookFor("leds", [this, &prevIndexP, &indexP, &currPin, &first](std::vector<uint16_t> uint16CollectList) { //this will be called for each tuple of coordinates!
+      starModJson.lookFor("leds", [this, &prevIndexP, &indexP, &currPin, &first](std::vector<uint16_t> uint16CollectList) { //this will be called for each tuple of coordinates!
         // USER_PRINTF("funList ");
         // for (uint16_t num:uint16CollectList)
         //   USER_PRINTF(" %d", num);
@@ -354,13 +354,13 @@ Coord3D map2Dto2D(Coord3D in) {
 
           prevIndexP = indexP;
         }
-      }); //jrdws.lookFor("leds" (create the right type, otherwise crash)
+      }); //starModJson.lookFor("leds" (create the right type, otherwise crash)
 
-      if (jrdws.deserialize(false)) { //this will call above function parameter for each led
+      if (starModJson.deserialize(false)) { //this will call above function parameter for each led
 
         uint8_t rowNr = 0;
         for (std::vector<Leds>::iterator leds=ledsList.begin(); leds!=ledsList.end() && leds->doMap; ++leds) {
-          USER_PRINTF("leds loop %d %d\n", leds->rowNr, leds->fx);
+          USER_PRINTF("leds loop %d %d\n", leds - ledsList.begin(), leds->fx);
 
           uint16_t nrOfMappings = 0;
           uint16_t nrOfPixels = 0;
@@ -404,9 +404,9 @@ Coord3D map2Dto2D(Coord3D in) {
 
           USER_PRINTF("projectAndMap [%d] V:%d x %d x %d = %d (%d-%d)\n", rowNr, leds->size.x, leds->size.y, leds->size.z, leds->nrOfLeds, nrOfMappings, nrOfPixels);
 
-          mdl->setValueV("fxSize", leds->rowNr, "%d x %d x %d = %d", leds->size.x, leds->size.y, leds->size.z, leds->nrOfLeds);
+          mdl->setValueV("fxSize", rowNr, "%d x %d x %d = %d", leds->size.x, leds->size.y, leds->size.z, leds->nrOfLeds);
 
-          USER_PRINTF("leds[%d].size = %d + %d\n", leds->rowNr, sizeof(Leds), leds->mappingTable.size()); //44
+          USER_PRINTF("leds[%d].size = %d + %d\n", rowNr, sizeof(Leds), leds->mappingTable.size()); //44
 
           rowNr++;
           leds->doMap = false;
diff --git a/src/App/AppLeds.h b/src/App/AppLeds.h
index 462103cf..504bf55b 100644
--- a/src/App/AppLeds.h
+++ b/src/App/AppLeds.h
@@ -1,7 +1,7 @@
 /*
    @title     StarMod
    @file      AppLeds.h
-   @date      20240226
+   @date      20240227
    @repo      https://github.com/ewowi/StarMod
    @Authors   https://github.com/ewowi/StarMod/commits/main
    @Copyright © 2024 Github StarMod Commit Authors
@@ -34,12 +34,14 @@ class Fixture; //forward
 
 //StarMod implementation of segment.data
 class SharedData {
+
   private:
     byte *data;
     uint16_t index = 0;
     uint16_t bytesAllocated = 0;
 
   public:
+
   SharedData() {
     USER_PRINTF("SharedData constructor %d %d\n", index, bytesAllocated);
   }
@@ -50,6 +52,7 @@ class SharedData {
 
   void clear() {
     memset(data, 0, bytesAllocated);
+    index = 0;
   }
 
   void loop() {
@@ -63,7 +66,7 @@ class SharedData {
       size_t newSize = bytesAllocated + (1 + ( newIndex - bytesAllocated)/1024) * 1024; // add a multitude of 1024 bytes
       USER_PRINTF("bind add more %d->%d %d->%d\n", index, newIndex, bytesAllocated, newSize);
       if (bytesAllocated == 0)
-        data = (byte*) malloc(newSize); //start bytesAllocated 100 bytes
+        data = (byte*) malloc(newSize);
       else
         data = (byte*)realloc(data, newSize);
       bytesAllocated = newSize;
@@ -82,8 +85,6 @@ class Leds {
 
 public:
 
-  uint8_t rowNr = 0;
-
   Fixture *fixture;
 
   uint16_t nrOfLeds = 64;  //amount of virtual leds (calculated by projection)
@@ -113,16 +114,16 @@ class Leds {
 
   bool doMap = false;
 
-  Leds(uint8_t rowNr, Fixture &fixture) {
-    USER_PRINTF("Leds[%d] constructor\n", rowNr);
-    this->rowNr = rowNr;
+  Leds(Fixture &fixture) {
+    USER_PRINTF("Leds[%d] constructor\n", UINT8_MAX);
+    // this->rowNr = rowNr;
     this->fixture = &fixture;
-    this->fx = 13;
-    this->projectionNr = 2;
+    // this->fx = 13;
+    // this->projectionNr = 2;
   }
 
   ~Leds() {
-    USER_PRINTF("Leds[%d] destructor\n", rowNr);
+    USER_PRINTF("Leds[%d] destructor\n", UINT8_MAX);
     fadeToBlackBy(100);
     for (std::vector<std::vector<uint16_t>> ::iterator physMap=mappingTable.begin(); physMap!=mappingTable.end(); ++physMap)
       physMap->clear();
diff --git a/src/App/AppModLeds.h b/src/App/AppModLeds.h
index cff51b52..227895e6 100644
--- a/src/App/AppModLeds.h
+++ b/src/App/AppModLeds.h
@@ -1,7 +1,7 @@
 /*
    @title     StarMod
    @file      AppModLeds.h
-   @date      20240226
+   @date      20240227
    @repo      https://github.com/ewowi/StarMod
    @Authors   https://github.com/ewowi/StarMod/commits/main
    @Copyright © 2024 Github StarMod Commit Authors
@@ -74,7 +74,7 @@ class AppModLeds:public SysModule {
         web->getResponseObject()["addRow"]["rowNr"] = rowNr;
 
         if (rowNr >= fixture.ledsList.size())
-          fixture.ledsList.push_back(Leds(fixture.ledsList.size(), fixture));
+          fixture.ledsList.push_back(Leds(fixture));
         return true;
       }
       case f_DelRow: {
@@ -107,7 +107,7 @@ class AppModLeds:public SysModule {
         //create a new leds instance if a new row is created
         if (rowNr >= fixture.ledsList.size()) {
           USER_PRINTF("ledslist fx changeFun %d %s", fixture.ledsList.size(), mdl->findVar("fx")["value"].as<String>().c_str());
-          fixture.ledsList.push_back(Leds(fixture.ledsList.size(), fixture));
+          fixture.ledsList.push_back(Leds(fixture));
         }
 
         effects.setEffect(fixture.ledsList[rowNr], var, rowNr);
@@ -227,7 +227,7 @@ class AppModLeds:public SysModule {
         for (std::vector<Leds>::iterator leds=fixture.ledsList.begin(); leds!=fixture.ledsList.end(); ++leds) {
           char message[32];
           print->fFormat(message, sizeof(message)-1, "%d x %d x %d = %d", leds->size.x, leds->size.y, leds->size.z, leds->nrOfLeds);
-          USER_PRINTF("valueFun fxSize[%d]([%d 0f %d]) = %s\n", leds - fixture.ledsList.begin(), fixture.ledsList[leds - fixture.ledsList.begin()].rowNr, fixture.ledsList.size(), message);
+          USER_PRINTF("valueFun fxSize[%d]([%d 0f %d]) = %s\n", leds - fixture.ledsList.begin(), leds - fixture.ledsList.begin(), fixture.ledsList.size(), message);
           mdl->setValue(var, JsonString(message, JsonString::Copied), leds - fixture.ledsList.begin()); //rowNr
         }
         return true;
@@ -296,7 +296,9 @@ class AppModLeds:public SysModule {
       // vector iteration on classes is faster!!! (22 vs 30 fps !!!!)
       for (std::vector<Leds>::iterator leds=fixture.ledsList.begin(); leds!=fixture.ledsList.end(); ++leds) {
         // USER_PRINTF(" %d %d,%d,%d - %d,%d,%d (%d,%d,%d)", leds->fx, leds->startPos.x, leds->startPos.y, leds->startPos.z, leds->endPos.x, leds->endPos.y, leds->endPos.z, leds->size.x, leds->size.y, leds->size.z );
+        mdl->contextRowNr = leds - fixture.ledsList.begin();// rowNr;
         effects.loop(*leds);
+        mdl->contextRowNr = UINT8_MAX;
       }
 
       FastLED.show();  
diff --git a/src/Sys/SysModFiles.cpp b/src/Sys/SysModFiles.cpp
index ba3a6801..6b059b2e 100644
--- a/src/Sys/SysModFiles.cpp
+++ b/src/Sys/SysModFiles.cpp
@@ -236,7 +236,7 @@ bool SysModFiles::readObjectFromFile(const char* path, JsonDocument* dest) {
   }
 }
 
-//candidate for deletion as taken over by JsonRDWS
+//candidate for deletion as taken over by StarModJson
 // bool SysModFiles::writeObjectToFile(const char* path, JsonDocument* dest) {
 //   File f = open(path, "w");
 //   if (f) {
diff --git a/src/Sys/SysModFiles.h b/src/Sys/SysModFiles.h
index f06994c1..f3422343 100644
--- a/src/Sys/SysModFiles.h
+++ b/src/Sys/SysModFiles.h
@@ -51,7 +51,7 @@ class SysModFiles: public SysModule {
 
   //write json into file
   //name is copied from WLED but better to call it readJsonFrom file
-  //candidate for deletion as taken over by JsonRDWS
+  //candidate for deletion as taken over by StarModJson
   // bool writeObjectToFile(const char* path, JsonDocument* dest);
 
   //remove files meeting filter condition, if no filter, all, if reverse then all but filter
diff --git a/src/Sys/SysModModel.cpp b/src/Sys/SysModModel.cpp
index 45ec9394..d75f1107 100644
--- a/src/Sys/SysModModel.cpp
+++ b/src/Sys/SysModModel.cpp
@@ -12,11 +12,12 @@
 #include "SysModModel.h"
 #include "SysModule.h"
 #include "SysModFiles.h"
-#include "SysJsonRDWS.h"
+#include "SysStarModJson.h"
 #include "SysModUI.h"
 
 JsonDocument * SysModModel::model = nullptr;
 JsonObject SysModModel::modelParentVar;
+uint8_t SysModModel::contextRowNr = UINT8_MAX;
 
 SysModModel::SysModModel() :SysModule("Model") {
   model = new JsonDocument(&allocator);
@@ -87,9 +88,9 @@ void SysModModel::setup() {
 
     cleanUpModel(JsonObject(), false, true);//remove if var["o"] is negative (not cleanedUp) and remove ro values
 
-    JsonRDWS jrdws("/model.json", "w"); //open fileName for deserialize
-    jrdws.addExclusion("fun");
-    jrdws.writeJsonDocToFile(model);
+    StarModJson starModJson("/model.json", "w"); //open fileName for deserialize
+    starModJson.addExclusion("fun");
+    starModJson.writeJsonDocToFile(model);
 
     // print->printJson("Write model", *model); //this shows the model before exclusion
 
diff --git a/src/Sys/SysModModel.h b/src/Sys/SysModModel.h
index 84a9eec5..6dc82351 100644
--- a/src/Sys/SysModModel.h
+++ b/src/Sys/SysModModel.h
@@ -1,7 +1,7 @@
 /*
    @title     StarMod
    @file      SysModModel.h
-   @date      20240226
+   @date      20240227
    @repo      https://github.com/ewowi/StarMod
    @Authors   https://github.com/ewowi/StarMod/commits/main
    @Copyright © 2024 Github StarMod Commit Authors
@@ -160,6 +160,8 @@ class SysModModel:public SysModule {
 
   bool doWriteModel = false;
 
+  static uint8_t contextRowNr;
+
   SysModModel();
   void setup();
   void loop();
@@ -290,6 +292,7 @@ class SysModModel:public SysModule {
   JsonVariant getValue(JsonObject var, uint8_t rowNr = UINT8_MAX) {
     if (var["value"].is<JsonArray>()) {
       JsonArray valueArray = var["value"].as<JsonArray>();
+      if (rowNr == UINT8_MAX) rowNr = contextRowNr;
       if (rowNr != UINT8_MAX && rowNr < valueArray.size())
         return valueArray[rowNr];
       else if (valueArray.size())
diff --git a/src/Sys/SysModUI.cpp b/src/Sys/SysModUI.cpp
index fd953d88..8f086832 100644
--- a/src/Sys/SysModUI.cpp
+++ b/src/Sys/SysModUI.cpp
@@ -18,7 +18,6 @@ std::vector<VarFun> SysModUI::varFunctions;
 std::vector<VarLoop> SysModUI::loopFunctions;
 int SysModUI::varCounter = 1; //start with 1 so it can be negative, see var["o"]
 bool SysModUI::stageVarChanged = false;
-uint8_t SysModUI::parentRowNr = UINT8_MAX;
 
 SysModUI::SysModUI() :SysModule("UI") {
 };
diff --git a/src/Sys/SysModUI.h b/src/Sys/SysModUI.h
index a3ecd617..3971e788 100644
--- a/src/Sys/SysModUI.h
+++ b/src/Sys/SysModUI.h
@@ -1,7 +1,7 @@
 /*
    @title     StarMod
    @file      SysModUI.h
-   @date      20240226
+   @date      20240227
    @repo      https://github.com/ewowi/StarMod
    @Authors   https://github.com/ewowi/StarMod/commits/main
    @Copyright © 2024 Github StarMod Commit Authors
@@ -60,8 +60,6 @@ class SysModUI:public SysModule {
   static bool stageVarChanged;// = false; //tbd: move mechanism to UserModInstances as there it will be used
   static std::vector<VarFun> varFunctions; //static because of static functions callChangeFun, processJson...
 
-  static uint8_t parentRowNr;
-
   SysModUI();
 
   //serve index.htm
@@ -127,10 +125,16 @@ class SysModUI:public SysModule {
     return initVarAndUpdate<bool>(parent, id, "button", false, 0, 0, readOnly, varFun);
   }
 
+  //int value ?
   JsonObject initSelect(JsonObject parent, const char * id, int value = UINT16_MAX, bool readOnly = false, VarFun varFun = nullptr) {
     return initVarAndUpdate<int>(parent, id, "select", value, 0, 0, readOnly, varFun);
   }
 
+  //WIP
+  JsonObject initSelect(JsonObject parent, const char * id, uint8_t * value = nullptr, bool readOnly = false, VarFun varFun = nullptr) {
+    return initVarAndUpdate<uint8_t>(parent, id, "select", value, 0, 0, readOnly, varFun);
+  }
+
   JsonObject initTextArea(JsonObject parent, const char * id, const char * value = nullptr, bool readOnly = false, VarFun varFun = nullptr) {
     return initVarAndUpdate<const char *>(parent, id, "textarea", value, 0, 0, readOnly, varFun);
   }
@@ -139,16 +143,21 @@ class SysModUI:public SysModule {
     return initVarAndUpdate<const char *>(parent, id, "url", value, 0, 0, readOnly, varFun);
   }
 
+  //WIP
+  template <typename Type>
+  JsonObject initVarAndUpdate(JsonObject parent, const char * id, const char * type, Type * value, int min = 0, int max = 255, bool readOnly = true, VarFun varFun = nullptr) {
+    // JsonObject var = initVar(parent, id, type, readOnly, varFun);
+    JsonObject var = initVarAndUpdate(parent, id, type, *value, min, max, readOnly, varFun);
+    // var["p"] = (const char *)value; //store pointer!
+    return var;
+  }
+
   template <typename Type>
   JsonObject initVarAndUpdate(JsonObject parent, const char * id, const char * type, Type value, int min = 0, int max = 255, bool readOnly = true, VarFun varFun = nullptr) {
     JsonObject var = initVar(parent, id, type, readOnly, varFun);
     if (min) var["min"] = min;
     if (max && max != UINT16_MAX) var["max"] = max;
 
-    if (parentRowNr != UINT8_MAX) {
-      USER_PRINTF("parentRowNr %s: %d for %s\n", mdl->varID(parent), parentRowNr, mdl->varID(var));
-    }
-
     bool valueNeedsUpdate = false;
     if (strcmp(type, "button") != 0) { //button never gets a value
       if (var["value"].isNull()) {
@@ -156,10 +165,10 @@ class SysModUI:public SysModule {
         // print->printJson("initVarAndUpdate varFun value is null", var);
       } else if (var["value"].is<JsonArray>()) {
         JsonArray valueArray = var["value"].as<JsonArray>();
-        if (parentRowNr != UINT8_MAX) { // if var in table
-          if (parentRowNr >= valueArray.size())
+        if (mdl->contextRowNr != UINT8_MAX) { // if var in table
+          if (mdl->contextRowNr >= valueArray.size())
             valueNeedsUpdate = true;
-          else if (valueArray[parentRowNr].isNull())
+          else if (valueArray[mdl->contextRowNr].isNull())
             valueNeedsUpdate = true;
         }
       }
@@ -168,13 +177,13 @@ class SysModUI:public SysModule {
     if (valueNeedsUpdate) {
       bool valueFunExists = false;
       if (varFun) {
-        valueFunExists = varFun(var, parentRowNr, f_ValueFun);
+        valueFunExists = varFun(var, mdl->contextRowNr, f_ValueFun);
       }
       if (!valueFunExists) { //setValue provided (if not null)
         if (mdl->varRO(var) && !mdls->isConnected) {
-          mdl->setValueNoROCheck(var, value, parentRowNr); //does changefun if needed, if var in table, update the table row
+          mdl->setValueNoROCheck(var, value, mdl->contextRowNr); //does changefun if needed, if var in table, update the table row
         } else
-          mdl->setValue(var, value, parentRowNr); //does changefun if needed, if var in table, update the table row
+          mdl->setValue(var, value, mdl->contextRowNr); //does changefun if needed, if var in table, update the table row
       }
     }
     else { //do changeFun on existing value
@@ -196,9 +205,6 @@ class SysModUI:public SysModule {
       }
     }
 
-    if (parentRowNr != UINT8_MAX)
-      print->printJson("gravity var", web->getResponseObject());
-
     return var;
   }
 
diff --git a/src/Sys/SysJsonRDWS.h b/src/Sys/SysStarModJson.h
similarity index 92%
rename from src/Sys/SysJsonRDWS.h
rename to src/Sys/SysStarModJson.h
index 86267d8b..449243a1 100644
--- a/src/Sys/SysJsonRDWS.h
+++ b/src/Sys/SysStarModJson.h
@@ -1,6 +1,6 @@
 /*
    @title     StarMod
-   @file      SysJsonRDWS.h
+   @file      SysStarModJson.h
    @date      20240114
    @repo      https://github.com/ewowi/StarMod
    @Authors   https://github.com/ewowi/StarMod/commits/main
@@ -12,19 +12,19 @@
 //Lazy Json Read Deserialize Write Serialize (write / serialize not implemented yet)
 //ArduinoJson won't work on very large fixture.json, this does
 //only support what is currently needed: read / deserialize uint8/16/char var elements (arrays not yet)
-class JsonRDWS {
+class StarModJson {
 
   public:
 
-  JsonRDWS(const char * path, const char * mode = "r") {
-    USER_PRINTF("JsonRDWS constructing %s %s\n", path, mode);
+  StarModJson(const char * path, const char * mode = "r") {
+    USER_PRINTF("StarModJson constructing %s %s\n", path, mode);
     f = files->open(path, mode);
     if (!f)
-      USER_PRINTF("JsonRDWS open %s for %s failed", path, mode);
+      USER_PRINTF("StarModJson open %s for %s failed", path, mode);
   }
 
-  ~JsonRDWS() {
-    USER_PRINTF("JsonRDWS destructing\n");
+  ~StarModJson() {
+    USER_PRINTF("StarModJson destructing\n");
     f.close();
   }
 
@@ -71,9 +71,9 @@ class JsonRDWS {
     while (f.available() && (!foundAll || !lazy))
       next();
     if (foundAll)
-      USER_PRINTF("JsonRDWS found all what it was looking for %d >= %d\n", foundCounter, varDetails.size());
+      USER_PRINTF("StarModJson found all what it was looking for %d >= %d\n", foundCounter, varDetails.size());
     else
-      USER_PRINTF("JsonRDWS Not all vars looked for where found %d < %d\n", foundCounter, varDetails.size());
+      USER_PRINTF("StarModJson Not all vars looked for where found %d < %d\n", foundCounter, varDetails.size());
     f.close();
     return foundAll;
   }
@@ -221,7 +221,7 @@ class JsonRDWS {
     for (std::vector<VarDetails>::iterator vd=varDetails.begin(); vd!=varDetails.end(); ++vd) {
       // USER_PRINTF("check %s %s %s\n", vd->id, varId, value);
       if (strcmp(vd->id, varId)==0) {
-        // USER_PRINTF("JsonRDWS found %s:%s %d %s %d %d\n", varId, vd->type, vd->index, value?value:"", uint16CollectList.size(), funList.size());
+        // USER_PRINTF("StarModJson found %s:%s %d %s %d %d\n", varId, vd->type, vd->index, value?value:"", uint16CollectList.size(), funList.size());
         if (strcmp(vd->type, "uint8") ==0 && value) *uint8List[vd->index] = atoi(value);
         if (strcmp(vd->type, "uint16") ==0 && value) *uint16List[vd->index] = atoi(value);
         if (strcmp(vd->type, "char") ==0 && value) strncpy(charList[vd->index], value, 31); //assuming size 32-1 here
@@ -278,7 +278,7 @@ class JsonRDWS {
       f.print("null");      
     }
     else
-      USER_PRINTF("dev JsonRDWS write %s not supported\n", variant.as<String>().c_str());
+      USER_PRINTF("dev StarModJson write %s not supported\n", variant.as<String>().c_str());
   }
 
 };
\ No newline at end of file
diff --git a/src/testOutput.txt b/src/testOutput.txt
index d8294b30..4b0dc4b9 100644
--- a/src/testOutput.txt
+++ b/src/testOutput.txt
@@ -133,10 +133,10 @@ initVarAndUpdate valueFun mdlSuccess count:17
 setValue var mdlSuccess[0] value null not array, creating
 initVarAndUpdate chFun init mdlEnabled v:[true,true,true,true,true,true,true,true,true,false,false,true,true,true,true,true,true]
 seqNrToName: 2DMatrix3232.json 9640
-JsonRDWS constructing /2DMatrix3232.json r
+StarModJson constructing /2DMatrix3232.json r
 pins 16: 0-1023
 allocatePin 16 Leds 0-1023
-JsonRDWS found all what it was looking for 1030 >= 6
+StarModJson found all what it was looking for 1030 >= 6
 projectAndMap P:32x32x1 V:15x15x1 and P:1024 V:225
 Coord3D toJson 15,15,1 -> {"x":15,"y":15,"z":1}
 setValue changed fxSize ->{"x":15,"y":15,"z":1}
@@ -146,7 +146,7 @@ Coord3D toJson 32,32,1 -> {"x":32,"y":32,"z":1}
 setValue changed fixSize ->{"x":32,"y":32,"z":1}
 callChangeFun fixSize unknown type for {"x":32,"y":32,"z":1}
 setValue changed fixCount ->1024
-JsonRDWS destructing
+StarModJson destructing
 FastLED.addLeds new 16: 0-1024
 lastReconnectAttempt == 0
 Access point disabled (init).