my denon volume dummy dimmer works like that :
{
"id": "denon-set-mastervolume",
"name": "Denon set Mastervolume",
"rule": "if $denon-volume-slider.dimlevel changes then execute \"curl -s http://192.168.178.67/goform/formiPhoneAppDirect.xml?MV$denon-mastervolume\"",
"active": true,
"logging": true
},
so maybe try IF dimlevel of $kueche.volume changes THEN do some stuff
what’s the dummy dimmer called? could you please provide some more information?