Aqara W100 sensor/thermostat — temperature and humidity sensor Zigbee Matter Thread

Okay, I started configuring my W100

The goal is to manage the heating of a bathroom electric heater (toaster-style) by the users.

From top to bottom
I created a fictitious MQTT device thermostat which I named:
ref-temperature-sb-chambre-6
The current value is 27° C
Below, the switch NOUS 4-1-20
Which supplies power or not to the electric heater.
Then the signal strength of the NOUS 4-1-20 switch
Then the room temperature recorded by the W100 here 77.2 °F (see explanation here)
Then the humidity value recorded by the W100
The middle Click button of the W100
and finally the signal strength of the W100

I created a scene Temperature Counter Ch6
with the trigger being the press of the + button of the W100
in the settings I chose Plus button pressed

Then I retrieve the reference value of the desired temperature from my fictitious thermostat.

I continue the procedure if the value is less than 35°C

Check that the scene works;
I send myself the retrieved thermostat value via Telegram and wait 1 second before continuing.

I add +1 to my thermostat value

I retrieve the new value of my thermostat

Check that the scene works;
I send myself via Telegram the new value retrieved from the thermostat.

I test it, it doesn’t work.
I change the trigger to a Xiaomi single click button.
That works — the value of my thermostat is incremented by 1: from 27°C it goes to 28°C
I then wanted to make a scene that compares the reference value with the room temperature value and, depending on it, activates or not the switch NOUS 4-1-20.
And try to display the reference temperature value on the W100 like the pool water temperature is displayed in the link shared by @mutmut

A bit of reading on the review of the Aqara W100.

The problem probably comes from the (Click button) of the W100 which returns No value recorded on Gladys.
on zigbee2MQTT we have

Button press Zigbee2MQTT result Button release Zigbee2MQTT result
Button + short press single_plus
Center button short press single_center
Button - short press single_minus
Button + double press double_plus
Center button double press double_center
Button - double press double_minus
Button + long press hold_plus Button + long release release_plus
Center button long press hold_center Center button long release release_center
Button - long press hold_minus Button - long release release_minus