Dim Philips Hue Lights triggered by KNX

So you found the problem😁
Maybe it is time to contact the developer or add the KNX dimmer to Homey.
As you have to define the IP-address of ETS, it looks like the special dimmer card is doing the same as the general “listen to address” card.

Adding the dimmer to homey results in actually the same thing
When defining the KNX dimmer, you have to assign the group addresses (switch/status/dim) to the dimmer. The group address DTP is configured in KNX (so dimmer card as well as KNX trigger I use, are based on the same)
I skip creating an actual dimmer card as I don’t need it as a card in Homey (I use the Philips Hue card which I linked instead)

When you talk about the developer, who would that be?
It’s not Philips Hue as that works correctly (triggering the flow manually)
So you mean KNX then?

According to https://homey.app/nl-nl/app/org.knx/KNX/ it is Athom.
You might search this forum for “KNX”, maybe this makes sense to you: KNX Dimmer
According to https://chatgpt.com/share/00db250f-c598-4c98-a628-c980e7e68b9e you need several groupadresses.