Triggering a Property 'DataChange' subscription when using AddNumberValueStreamEntry

Thanks for the pointer Carles - it hadn't occurred to me that I might trigger my own datachange event. Follow up question though - I must not quite be using this correctly as it is throwing a warning in the application log. Specifically the log says: Unable to publish event in MyThingName : Event DataChange not found

Any explanation for why my attempt to call a DataChange is rebuffed as not found?

Perhaps the way I call DataChange is at fault. The newValue infotable parameter I'm using employs the namedVTQ datashape (seemed reasonable choice and I don't see any errors arising from that, but it wasn't clear if a particular datashape is needed). A snipped of my test service for this is below (I pass in a 'thing' as an input parameter, and then create a value stream entry not shown below for brevity):

Things[thing].AddNumberValueStreamEntry(aparams); // This works fine. I get my value stream entry for the date I want etc.

var params = {

  infoTableName : "InfoTable",

  dataShapeName : "NamedVTQ"

};

var namedVTQ = Resources["InfoTableFunctions"].CreateInfoTableFromDataShape(params);

// NamedVTQ entry object - used this since I wasn't entirely sure what shape the DataChange expects.

var newEntry = new Object();

newEntry.name = "TEMP"; // STRING - isPrimaryKey = true

newEntry.time = now; // DATETIME

newEntry.value = "98.6"; // VARIANT

newEntry.quality = "GOOD"; // STRING

namedVTQ.AddRow(newEntry); // Logging this out shows a valid data row in the infotable

var params = {

  newValue: namedVTQ /* INFOTABLE */,

  oldValue: undefined /* INFOTABLE */

};

Things[thing].DataChange(params); // This would appear to be throwing that Warning in the application log.

TIA for any other suggestions you may have. As a workaround, I've augmented my service that creates the historical entry to the value stream to also write the additional values I was otherwise going to derive by my subscription to the datachange event. But it ends up being duplicate code so I'd rather not do that. And mostly I just want to get a handle on correctly using the DataChange event in a service for my own future reference!