using pro tools software instruments with mpc 2000

im using reason via rewire in pro tools, and assigning different sound modules to different midi channels in the mpc . With rewire when u add an instrument track the rewire box comes up and u assign reason to a different channel each time, and u can have all different modules assigned to different midi channels in the mpc and record ur sequence.
i want to do the same with xpand in pro tools but when i choose an instrument it plays on all the channels on the mpc i cant assign it to individual channels. so i cant open more then 1 instrument at the same time it will only play the highlighted instrument track. I can record a midi performance in pro tools and then open another instrument track with another instrument and hear them both, but i want to use the mpc as the sequencer not pro tools, and use it the same as im using reason rewire in my mpc.
anyone thanks.

Mate, I am having the same probs. Did you manage to sort it out so you could use multiple soft synths from pro tools in your mpc sequencer???
If so I ma desperate to know how!!!

You have to set the instrument or MIDI tracks to record-enabled mode (red record button blinking). I bumped into the same issue some weeks ago.. a head-scratching experience till I figured it out.