After reading a lot more i try this :
First it seem to work (don't worry about the < and >) this was only for testing...
But figured out that what is between the " " is handled as "text" and not the value which is inside the sensor right ?
Any one any idea how to solve this...
In they end i want to switch the floorheating pump on and off based on room temperture and water temperture in the Heating system.
I know this is not perfect.. but EVOHOME makes even a bigger mess...

Raspberry PI 3 - Opentherm Gateway + ESP8826 - EvoHome - ESPEasy CO2 + Fancontrol - RF-Link - zigbee2mqqt -