Hello, i would like to do some calculation before a value from a thing-channel gets written to the item state - is that somehow possible in OH3? At OH2.5 i used a second item and a rule but i would like to “simplify” this: rule "Umrechnung Ventilstellung HM_WZ_Heizkoerper_K_Level" when Item H…

[image] e36Alex: calculation before a value from a thing-channel gets written to the item state What is your Thing and Thing Channel? Some Bindings allow for transformations to occur at the Channel level.

Its a Homematic IP HMIP-eTRV on a CCU3 in this case. I already had a look at the channel config, but there seems to be no relevant option: [grafik]

My rules are looking similar and I’m getting the same error message. But instead of an Homematic IP actor, I’m using MAX Thermostats with Homegear.

My problem could be solved here: [image] Rules not working after migration from 2.5 to 3.0 Hello, after my migration from OH2.5 to OH3.0 two rules arent working anymore and i dont really know, whats the reason. Rule 1: Error message: 18:06:11.127 [ERROR] […

Thanks for the link to your thread. That was very helpful. Even though you did not post you solution to you problem with your Rule 1, I did some further research and found this Pull Request: [automation] Provide triggering item name in the rule con…

Calculation of item value

Setup, Configuration and Use Beginners

e36Alex (Alexander) January 3, 2021, 4:56pm 5

My problem could be solved here: