@homoran
Sorry, wenn man vor dem Problem sitzt dann denkt man beim Schreiben, dass es andere schon verstehen werden...

Das Widget zeigt nur bei 100% Dimmung(bzw. Helligkeit) icon_on an. Bei 99% und dadrunter icon_off.
Das ändert sich nur wenn ich den "max" wert verändere - allerdings setzt er dann auch nur noch diesen Wert, wenn ich auf das Widget klicke.
Was ich erreichen möchte ist:
Lampe ist Aus (0%). Ein Klick aufs Widget schaltet diese auf 100% und das Widget zeigt icon_on.
Lampe wird am Schalter oder via Slider eingeschaltet, auf zB. 50%, Widget zeigt nun trotzdem icon_on.
Wird nun auf das Widget geklickt, soll die Lampe auf 0% gesetzt werden.
Wird nochmals drauf geklickt wird die Lampe wieder auf 100% gesetzt.
Hoffe das dies nun verständlicher ist.
PS: Wenn ich den "min" Wert frei lasse, dann reagiert es so wie gewünscht, springt aber von 0% beim draufklicken nur auf 5% statt auf 100% 
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