Heat valve doen not work well

I havev some z2mqtt radiator valves from SONOFF
If i set the temp in HA to 21 by automation HA don’t do that insteat the temp calibration is set tot 21
All other functions work well.

What and how i do:
In automation i say:
“Action Set value for Bathroom heating Temperature 20”
In mqtt explorer i see “local_temperature_calibration”: 10,
it should say “local_temperature_calibration”: 10,
When set it to 21 i get message invalid value
If i set temp in zigbee2mqtt to 21 it works fine i can see in explorer
“occupied_heating_setpoint”: 21,