control Evohome thermostat with temperature door sensor

[Frankhermie 0]

I would like to compare and control the thermostat of my evohome system in a certain room  with the temperature on a door sensor in the same room. Does anyone know how to do this or has a example of a scene? 

[boerremk 84]

Did you already implemented:

This will be the best start, after that you can make a scene and set the evohome themostat, I can help you with that, no problem.

[Frankhermie 0]

Yes I did boerremk. But what variable do I have to use in my scene  that gives me the temperature of the thermostat in my room and that I can compare against the temp of the sensor?