diff --git a/README.md b/README.md
index 4fd00b6..0a43e22 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ JSONATA API Serverless Function
 ## Usage
 
 ### Example
-Request
+Request with `jsonata` as query parameter and data in POST body
 ```
 curl --request POST 'http://localhost:7071/api/eval?jsonata={%22sum%22:%20$sum(Account.Order.Product.(Price%20*%20Quantity))}' \
 --header 'Content-Type: application/json' \
@@ -98,3 +98,90 @@ Response
   "sum": 536.36
 }
 ```
+Request with `jsonata` and `data` in POST body
+```
+curl --location --request POST 'http://localhost:7071/api/eval' \
+--header 'Content-Type: application/json' \
+--data-raw '{
+    "jsonata": "{'\''sum'\'': $sum(Account.Order.Product.(Price * Quantity))}",
+    "data": {
+        "Account": {
+            "Account Name": "Firefly",
+            "Order": [
+                {
+                    "OrderID": "order103",
+                    "Product": [
+                        {
+                            "Product Name": "Bowler Hat",
+                            "ProductID": 858383,
+                            "SKU": "0406654608",
+                            "Description": {
+                                "Colour": "Purple",
+                                "Width": 300,
+                                "Height": 200,
+                                "Depth": 210,
+                                "Weight": 0.75
+                            },
+                            "Price": 134.45,
+                            "Quantity": 2
+                        },
+                        {
+                            "Product Name": "Trilby hat",
+                            "ProductID": 858236,
+                            "SKU": "0406634348",
+                            "Description": {
+                                "Colour": "Orange",
+                                "Width": 300,
+                                "Height": 200,
+                                "Depth": 210,
+                                "Weight": 0.6
+                            },
+                            "Price": 21.67,
+                            "Quantity": 1
+                        }
+                    ]
+                },
+                {
+                    "OrderID": "order104",
+                    "Product": [
+                        {
+                            "Product Name": "Bowler Hat",
+                            "ProductID": 858383,
+                            "SKU": "040657863",
+                            "Description": {
+                                "Colour": "Purple",
+                                "Width": 300,
+                                "Height": 200,
+                                "Depth": 210,
+                                "Weight": 0.75
+                            },
+                            "Price": 34.45,
+                            "Quantity": 4
+                        },
+                        {
+                            "ProductID": 345664,
+                            "SKU": "0406654603",
+                            "Product Name": "Cloak",
+                            "Description": {
+                                "Colour": "Black",
+                                "Width": 30,
+                                "Height": 20,
+                                "Depth": 210,
+                                "Weight": 2
+                            },
+                            "Price": 107.99,
+                            "Quantity": 1
+                        }
+                    ]
+                }
+            ]
+        }
+    }
+}'
+```
+Response
+```
+{
+  "sum": 536.36
+}
+```
\ No newline at end of file
diff --git a/eval/index.js b/eval/index.js
index 62ce0c2..66b5a3a 100644
--- a/eval/index.js
+++ b/eval/index.js
@@ -1,16 +1,19 @@
-const jsonata = require("jsonata");
-
-module.exports = async function (context, req) {
-
-    context.log('JavaScript JSONata function processed a request.');
-
-    const has_data = (req.query.jsonata && req.body);
-    const responseMessage = has_data
-        ? jsonata(req.query.jsonata).evaluate(req.body)
-        : "This JSONata function executed successfully. Pass a jsonata in the query string and JSON in the request body for an evaluated response.";
-
-    context.res = {
-        // status: 200, /* Defaults to 200 */
-        body: responseMessage
-    };
+const jsonata = require("jsonata");
+
+module.exports = async function (context, req) {
+
+    context.log('JavaScript JSONata function processed a request.');
+
+    const has_data = (req.query.jsonata && req.body);
+    const responseMessage = req.body ? has_data
+        ? jsonata(req.query.jsonata).evaluate(req.body)
+        : (req.body.jsonata && req.body.data)
+        ? jsonata(req.body.jsonata).evaluate(req.body.data)
+        : "This JSONata function executed successfully. Pass jsonata and data JSON for an evaluated response."
+        : "This JSONata function executed successfully. Pass in paramenters for an evaluated response."
+
+    context.res = {
+        // status: 200, /* Defaults to 200 */
+        body: responseMessage
+    };
 }
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 28285fe..03124fc 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,13 +1,31 @@
 {
   "name": "jsonata-fn-js",
   "version": "1.0.0",
-  "lockfileVersion": 1,
+  "lockfileVersion": 2,
   "requires": true,
+  "packages": {
+    "": {
+      "name": "jsonata-fn-js",
+      "version": "1.0.0",
+      "dependencies": {
+        "jsonata": "^1.8.6"
+      },
+      "devDependencies": {}
+    },
+    "node_modules/jsonata": {
+      "version": "1.8.6",
+      "resolved": "https://registry.npmjs.org/jsonata/-/jsonata-1.8.6.tgz",
+      "integrity": "sha512-ZH2TPYdNP2JecOl/HvrH47Xc+9imibEMQ4YqKy/F/FrM+2a6vfbGxeCX23dB9Fr6uvGwv+ghf1KxWB3iZk09wA==",
+      "engines": {
+        "node": ">= 8"
+      }
+    }
+  },
   "dependencies": {
     "jsonata": {
-      "version": "1.8.5",
-      "resolved": "https://registry.npmjs.org/jsonata/-/jsonata-1.8.5.tgz",
-      "integrity": "sha512-ilDyTBkg6qhNoNVr8PUPzz5GYvRK+REKOM5MdOGzH2y6V4yvPRMegSvbZLpbTtI0QAgz09QM7drDhSHUlwp9pA=="
+      "version": "1.8.6",
+      "resolved": "https://registry.npmjs.org/jsonata/-/jsonata-1.8.6.tgz",
+      "integrity": "sha512-ZH2TPYdNP2JecOl/HvrH47Xc+9imibEMQ4YqKy/F/FrM+2a6vfbGxeCX23dB9Fr6uvGwv+ghf1KxWB3iZk09wA=="
     }
   }
 }
diff --git a/package.json b/package.json
index 9a46af6..aaaf993 100644
--- a/package.json
+++ b/package.json
@@ -7,7 +7,7 @@
     "test": "echo \"No tests yet...\""
   },
   "dependencies": {
-    "jsonata": "^1.8.5"
+    "jsonata": "^1.8.6"
   },
   "devDependencies": {}
 }