Hi, I'm trying to assign control over the EXS24 ENV2 (Amp) attack to one of the MIDI faders on my keyboard so I can change it as I play. However I can't figure out which MIDI number the EXS attack might have been allocated? Can the EXS24 in fact accept MIDI commands to make parameter changes? Or is this only do-able through drawing in the automation? Thanks, Denis Clohessy