Rc600 midi commands

Anyone know how to program the midi maestro to control an rc600? I can’t get it to work. Specifically I’m trying to control guitar to bass effects. What do I set the value to? I’m receiving channel 1, have Cc# (command to 20) but can’t get it to work regardless of value. I’ve tried 0,1,127 etc. I’m lost

Boss RC settings>assign> set it to CC

It’s not that simple. It’s not working. What value is a button push?

the midi cc of the RC 600 do you have a list of it?