HRT4-ZW (SRT321) Help about "Call for Heat" state.

Do anybody know how or where can I get a notification on the "Call For Heat" state of this thermostat? I am unable to get find where the "Call for Heat" state is notified. The only device that notices and reacts when the thermostat goes to call for heat is the associated receiver SSR303. In "triggers" there is no such state as one of the options to initiate the trigger, only Zone1 temperature, heat set point, zwave operation mode ID, zwave operation mode name and battery level are usable to start the trigger.

You can easily workaround:

1) Use brilliant TRV plugin (made by autolog)

2) Some very basic python code, something like:

setpoint = indigo.variables[1356314275].getValue(float)
dev = indigo.devices[770190775]
indigo.thermostat.setHeatSetpoint(dev, setpoint)

And variables to engage heating.