Unable to set ATC FLIGHT NUMBER, ATC ID, and ATC AIRLINE

Version: 1.2.8.0

Frequency: Consistently

Bug description:
The following simvars can’t be set via the corresponding commands even though they are listed as settable in the SDK. Aircraft Radio Navigation Variables

SimVar.SetSimVarValue("ATC FLIGHT NUMBER", "string", "TEST123");
SimVar.SetSimVarValue("ATC ID", "string", "TEST123");
SimVar.SetSimVarValue("ATC AIRLINE", "string", "QFA");

The simvars are able to be set via Simconnect through Simvar Watcher.