It is working (didn’t notice it is in another room in my google home app).
But now I can’t put temperature sensor: Number currentTemperature "Living room Temperature [%.1f °C]" <temperature> (gLivingroom) ["Temperature"] { ga="TemperatureSensor", channel="zwave:device:Zwave:node15:sensor_temperature"}
I was looking for the same right now. While it seems to be available in openhab and google the development seems to be ongoing, at least that is was I got from here. I also read somewhere that there is no visual representation in the Google home app yet. I am trying to implement it using a Thermostat, but that has it own problems, as it is discussed here .
I hope this helps.