Reply to Vms4 mapping question

i have a question ... i have mapped my vms4 to channels A and B and im trying to modify it for C and D but my modifications seem to be off ... so for deck A all the buttons and knobs that have to switch ive mapped and the Modifier Conditions are M3=0 and for deck C are M3=1. after that i created 2 modifiers #1 mapped to the same button one with M3=0 and button value of 1 and the other one with M3=1 with button value 0 ... what am i doing wrong... thank you