Ok, the solution for this question here is: the Channel has to be an event Channel, not a State Channel. Thanks @rlkoshak
When choosing the thing astro:sun:local, then the ui is working fine, too:
Overall event Channels seems to be quite rare. For example the channel motionAlarm (ipCameraBinding) is a switch, too.
Thats is absolutely true and I’m also aware of it. Sometimes it’s interesting to see how others do it.
This does not work.
Thanks for all your help. I will close this thread and go back to my somrig problem.