8.3.3 - Using PredictionThing to perform real time scoring from a Service (not a REST call)

Has anyone been able to do a real time scoring in 8.3 by calling 'RealtimeScore' service of 'AnalyticsServer_PredictionThing' Thing? I want to be able to send data constructed as an infotable. 

I have a published Analytics Model. I tried the following code without much luck:

var adsmf = Resources["InfoTableFunctions"].CreateInfoTableFromDataShape({
 infoTableName : "InfoTable",
 dataShapeName : "AnalyticsDatasetMetadataFlattened"
});

var dataShape = DataShapes["AnalyticsServerConnector.pa_temp_pa_lft_temp_705999f9-e266-4771-91b2-b8d38bf1ca9f.InputParamsDataShape"].GetFieldDefinitions();

var tableLength = dataShape.rows.length;
for (var x=0; x < tableLength; x++) {
 var row = dataShape.rows[x];
 
 if (row.name.startsWith('_')) {
 fieldName = newEntry.item.substring(1, newEntry.item.length);

 var adsmfEntry = new Object();
 adsmfEntry.timeSamplingInterval = undefined; // INTEGER
 adsmfEntry.isStatic = undefined; // BOOLEAN
 adsmfEntry.fieldName = fieldName; // STRING
 adsmfEntry.min = row.min; // NUMBER
 adsmfEntry.max = row.max; // NUMBER
 adsmfEntry.dataType = row.dataType; // STRING
 adsmfEntry.opType = row.opType; // STRING
 }
}

var dsRef = Resources["InfoTableFunctions"].CreateInfoTableFromDataShape({
 infoTableName : "InfoTable",
 dataShapeName : "AnalyticsDatasetRef"
});

// Tried different way to set values without any luck - any clues would be helpful

dsRefEntry = new Object();
dsRefEntry.datasetUri = 'body:/'; // STRING
dsRefEntry.metadata = adsmf; // INFOTABLE
//dsRefEntry.data = values; // INFOTABLE
dsRefEntry.format = 'csv'; // STRING
dsRef.AddRow(dsRefEntry);



var result = Things["PTC02PWIL-AnalyticsServer_PredictionThing"].RealtimeScore({
 goalField: 'MY_GOAL' /* STRING */,
 modelUri: 'http://localhost:8080/Thingworx/FileRepositories/TW.AnalysisServices.ModelRepository/AnalyticsServerConnector/pa_temp_pa_lft_temp_705999f9-e266-4771-91b2-b8d38bf1ca9f.xml',
 identifierFields: idFields,
 datasetRef: dsRef
});