Hi Michael @MaMi,
for the first two rules it should be possible to simply link the channels to your GalerieHelligkeit. However I tried it and since OH3 it is no longer possible to directly link these trigger channels to an item.
BTW @flynux Sorry I missed you post regarding this issue, I will analyse this problem, maybe it is an OH3 issue.
Rules 3-5 cannot be handled by the binding out of the box, as I am not getting these short press/long press messages from eltako rockers. The NodOn soft buttons emit those events short, long and double press.
However it is possible to do it by yourself. You already found a thread about a similar requirement. I already posted some rules there, maybe they give you an idee how to solve your problem. If it is not the case you could pm me and we try to find a solution together.
Best regards
Daniel