Generic Thermostat

[kind terrace]

Hi there.
I have a question if if possible anyone to help me, i done some new generic thermostat's for my home using helper section but i will like to add more then a temperature thermostat for the living room but when ai do an average temperature helper is not allowing me to use it as temperature sensor. I tried to look where the generic thermostat is saved after is done in helper section but i m not able to find it. Is anyone which can tell me where is can find it in home assistant files and give me some advise how to solve this issue ?