Contrib-huemagic: Dimm Switch not found

I run on latest releases.
First time using my new HUE Bridge and 3 lamps - WOW.. Cool, all stuff is working.
Last step was implement the HUE Dimm Switch.
Add the node and search - the listbox is empty, no errormessage. and no chance to enter a value (as I done for the lamps [1, 2, 3]
When I try with te node TAP Button" , click on search - I get an errormessage "No Tap button found". (Absolut correct)

So - from My point of view - the system founds something, but is not visible in the listbox. Any idea?

grafik