MWC RGB Light with RX802 and Devo 8S

Hi there,

a few days ago i got my MWC RGB Light and try to get it running with my Devo 8s.
Now i have some Questions..
I need a Chanel with 8-10 positions, or an analogue Channel.
On my Devo 8s i have this "trigger" switches on the upper side, besides the mixer switches.
Am i able to map this trigger to a 1 - 100 Chanel with stepping of 10? So that i got a 10 position trigger?
And how do i connect this with my RX802?

Greetings

Patrick