Unable to populate Change fields when creating a Change from a Service Request using Deluge

Using sample Custom Function sample code as a base. Code creates a Change Ticket with the Title and Description fields populated. No other fields populate. For testing, I used a clean "Normal Change Template (default)", I cleared all fields and removed mandatory settings. I created a clean Service Request template and removed mandatory fields. When saving and testing the Deluge Code, I used the info command and confirmed the code was retrieving the information from the Service Request. As you can see in the JSON string, I removed the additional fields trying to make the string as simple as possible. Here is the code, and screen shots of the Change Ticket and Service Request:

//Assigning value got from the Request fields to variables.These values can be used in constructing the JSON for creating the Change

requestID = requestObj.get("id");

createdTime = requestObj.get("created_time");

ReqSubject=requestObj.get("subject");

ReqDescription=requestObj.get("description");

ReqCategory=requestObj.get("Category");

ReqSubcategory=requestObj.get("subcategory");

ReqItem=requestObj.get("item");

ReqChangeOwner=requestObj.get("changeowner");

//ReqApplication=requestObj.get("udf_fields").get("udf_pick_27");

ReqScheduledstarttime=requestObj.get("scheduled_start_time");

ReqScheduledendtime=requestObj.get("scheduled_end_time");

//info requestObj.get("udf_fields").get("udf_pick_27");

info requestObj.get("scheduled_start_time");

info requestObj.get("scheduled_end_time");

//{"template":{"name":"1 Standard - Schedule Vendor Changes","id": "1503"},

//,"scheduled_start_time":ReqScheduledstarttime.get("display_value"),"scheduled_end_time": ReqScheduledendtime.get("display_value")

//inputData = {"operation":{"details":{"template":{"name":"1 Standard - Schedule Vendor Changes","id": "1503"}}}};

// "udf_fields":{"fields":{"udf_pick_601":ReqApplication}},

//,"scheduled_start_time":ReqScheduledstarttime.get("value"),"scheduled_end_time": ReqScheduledendtime.get("value")

inputData = {"operation":{"details":{"title":"[RE-"+requestID+"] "+ReqSubject,"description":ReqDescription,"stagename": "planning","statusname": "Requested For Information","priority":"high"}}};

instanceJson = context.get("instance");

helpdeskID = instanceJson.get("id");

// url: "http://sgb-bsd:8080/api/v3/changes"

response = invokeurl

[

url: "http://Server:xxxx/sdpapi/change"

type: POST

parameters: {"INPUT_DATA":inputData,"TECHNICIAN_KEY":"xxxxxxxxxxx-xxxxxx-xxxx-xxxxxxxxx","format":"json","OPERATION_NAME":"ADD","PORTALID":helpdeskID}

];

info response;

operation = response.get("operation");

result = operation.get("result");

status = result.get("status");

//Messages to be printed in Request history

returnObj = Collection();

if("success".equalsIgnoreCase(result.get("status"))) {

returnObj.insert("result":"success");

returnObj.insert("message":"Change request created successfully");

} else {

returnObj.insert("result":"failure");