Set Heating Setpoint with automation

Hi there,
I try to do an automation that turns off or lowers the heating setpoint of my Radiator Thermostat when I open a window

The problem is that in the Automation dialog there only is an option for " Set value for Thermostat Sonoff Temperatur "
But this only sets the “Local temperature calibration” temperature and not the heating setpoint

How do I get the “Occupied Heating setpoint” into my Automation?

Use a climate action rather than a device one

And thanks again! :slight_smile: