Knx and Hue not dimming correctly

Hello guys.
In OH 3 I’ve Setup a Knx channel from a touch button, where I have a switch on/off and a dim relative telegram (no absolute dimming value)
In the setup I attached a item to that knx channel, here I selected a Hue ambience light. When trying to dim up/down it only goes ± 10% from where the lamp is set already - also what I see in the hue app - so the dimming doesn’t work pretty good - what have I done wrong here?
I selected the “Dimmer with external feedback” when creating the knx channel…

Maybe the dimming telegram is not sent multiple times by your switch.

Try with
in your channel definition.

See the binding documentation for further details.