Issue of the topic:
I have a very simple rule which compares a setable Temperature Value to a Temperature comming from the WeatherForecast Thing.
Today Forecast (Item A) is 5.99 °C and the other Item (Item B) is 15°C.
But A < B is not true.
First Problem was that Item B was dimensionless, so I tried setting it to Number:Temperature too, but that still did not work.
Setting both Items to dimensionless Number works perfectly.
Is there a guide how to deal with dimensions in rules in OH3?