diff --git a/src/Sys/SysModModel.h b/src/Sys/SysModModel.h
index 6ec3eee1..38d39185 100644
--- a/src/Sys/SysModModel.h
+++ b/src/Sys/SysModModel.h
@@ -86,15 +86,17 @@ namespace ArduinoJson {
       dst["x"] = src.x;
       dst["y"] = src.y;
       dst["z"] = src.z;
-      USER_PRINTF("Coord3D toJson %d,%d,%d -> {x:%d,y:%d,z:%d}\n", src.x, src.y, src.z, dst["x"].as<uint8_t>(), dst["y"].as<uint8_t>(), dst["z"].as<uint8_t>());
+      USER_PRINTF("Coord3D toJson %d,%d,%d -> %s\n", src.x, src.y, src.z, dst.as<String>().c_str());
       return true;
     }
 
     static Coord3D fromJson(JsonVariantConst src) {
+      USER_PRINTF("Coord3D fromJson %s\n", src.as<String>().c_str());
       return Coord3D{src["x"], src["y"], src["z"]};
     }
 
     static bool checkJson(JsonVariantConst src) {
+      USER_PRINTF("Coord3D checkJson %s\n", src.as<String>().c_str());
       return src["x"].is<uint16_t>() && src["y"].is<uint16_t>() && src["z"].is<uint16_t>();
     }
   };
@@ -174,7 +176,7 @@ class SysModModel:public SysModule {
         }
         else {
           USER_PRINTF("setValue changed %s %s -> %s\n", jsonToChar(var, "id"), oldValue.c_str(), var["value"].as<String>().c_str()); //old value
-          web->addResponse(var["id"], "value", var["value"], rowNr);
+          web->addResponse(var["id"], "value", var["value"]);
           changed = true;
         }
       }
@@ -197,12 +199,11 @@ class SysModModel:public SysModule {
           notSame = valueArray[rowNr].isNull() || valueArray[rowNr].as<Type>() != value;
 
         if (notSame) {
-          // setValue(var, value, rowNr);
           // if (rowNr >= valueArray.size())
           //   USER_PRINTF("notSame %d %d\n", rowNr, valueArray.size());
           valueArray[rowNr] = value; //if valueArray[<rowNr] not exists it will be created
           // USER_PRINTF("  assigned %d %d %s\n", rowNr, valueArray.size(), valueArray[rowNr].as<String>().c_str());
-          web->addResponse(var["id"], "value", var["value"], rowNr);
+          web->addResponse(var["id"], "value", var["value"]); //send the whole array to UI as response is in format value:<value> !!
           changed = true;
         }
       }
diff --git a/src/Sys/SysModUI.cpp b/src/Sys/SysModUI.cpp
index c9cf9c6f..0c0ad217 100644
--- a/src/Sys/SysModUI.cpp
+++ b/src/Sys/SysModUI.cpp
@@ -238,8 +238,10 @@ void SysModUI::processJson(JsonVariant json) {
           else {
             if (newValue.is<const char *>())
               mdl->setValue(var, JsonString(newValue, JsonString::Copied), rowNr);
+            else if (newValue.is<Coord3D>()) //otherwise it will be treated as JsonObject and toJson / fromJson will not be triggered!!!
+              mdl->setValue(var, newValue.as<Coord3D>(), rowNr);
             else
-              mdl->setValue(var, newValue.as<JsonVariant>(), rowNr);
+              mdl->setValue(var, newValue, rowNr);
           }
           // json.remove(key); //key / var["id"] processed we don't need the key in the response
         }