changing midi tracks to control Ensoniq ASR X tracks from Ke

really cant find my way through this.
i can controll ch. 1 just fine with my arturia 49 controller.
But i dont know how to change to ch.2 and up to controll other sounds that are on the other 15 channels.

any advice?

anyone know if its possible to mute tracks from controller? cant get that working neither.

to deecribe my problem further.
i have of course the midi controll center by arturia but setting some knob to ch.2 without also being able to change the midi ch. output of the arturia of course wont get through to midi ch. 2 on the Ensoniq.

so its basicaly the changing midi channels on the controller that i cant find my way around.

found everything... all good