Thank you for your response!
I guess my situation is not with the DSP but with my boss. I am able to connect it and when I try it with Mainstage I’m able to send program changes from Mainstage to the Boss but I cannot do the other way around. My boss is not sending any midi messages. Both Mainstage and Neural recognize the midi device. I just can’t figure out how I have to set up my BOSS to send those midi messages. Since I saw that erik.morgan said he was using his boss as a controller, I wanted to see if he or you could tell me how to set up the boss