Instead of the trigger temperature I would prefer a variable.
However, the variable would have to be set in a separate flow.
The easiest but maybe not the best solution is the following:
When… Temp. > 26
Then… set Variable „Temp_Bedroom“ to Yes
Else set Variable „Temp_Bedroom“ to No
Replace the temperature sensor at If… with “When a variable has changed” in the main flow.
At And… you have to replace the logic card temperature with the logic card “Temp_Bedroom” is “Yes”.
The variable “Blind is greater than” I would delete.
The advantage of a variable is that it does not change constantly and thus triggers the flow.
If you use the temperature as trigger, the flow will be triggered every time the temperature changes above 26 °C.