Unable to convert from com.thingworx.dsl.engine.adapters.VirtualFunction to Infotable

[tlichtenberger-]

Hey Ankit Gupta​,

thanks for your answer.

Other question:

I want to write an service which calls QueryPropertyHistory in order to fill a time chart.

For that, I again use the GetThingnameForIdentifier service to find the proper thing which I want to retrieve the properties of.

The result should be an infotable so that I can bind the chart with All Data.

My service looks like following:

when testing this service I get following error:

Any suggestions?

Thank you for helping me out!

Theresa ~

Message was edited by: Sushant Pandey branched from https://community.thingworx.com/thread/41652?sr=inbox&ru=13444

[ankigupta]

Correct way is:

var params = {
    identifier: Id /* STRING */
};
// result: THINGNAME
var thingname = Resources["EntityServices"].GetThingNameForIdentifier(params);
//Things[thingname].temperature= temperature;
var params1 = {
    oldestFirst: undefined /* BOOLEAN */,
    maxItems: undefined /* NUMBER */,
    endDate: undefined /* DATETIME */,
    query: undefined /* QUERY */,
    startDate: undefined /* DATETIME */
};
// result: INFOTABLE
var result = Things[thingname].QueryPropertyHistory(params1);