Change midi channel number of midi keyboard - by pressing a key on that same keyboard

Hey, what I am trying to do is route a key (for example C-1) of my midi-keyboard (midi-tech i2-64) to a channel change for that same keyboard. I want to do that in order to make a channel change as fast and uncomplicated as possible. Otherwise the player either has to go into a select menu on the keyboard or use a slider that is very inaccurate and needs correction. So if she presses C-1 the display digit on the keyboard would jump from 1 to 2. That way she also has a visual control of the channel switch. Somehow I cannot make noteout / cltout / pgmout send out a channel change to the keyboard. Anyone has a clue? Thank you.