Program modulation matrix- aftertouch

Can anyone help me with setting up the program modulation matrix for a keygroup? I've got aftertouch selected in the left column and I set a depth, but the program parameters I select don't seem to be responding to the aftertouch. I checked the MIDI Monitor, the mpc is seeing 'Key Press' . I can't figure out why it won't respond to the aftertouch data.

Thanks in advance for your help.

Nevermind....was missing Program->Misc Aftertouch Poly....had it set in Global tho lol