Are you talking about the Kontact player that comes with GPO and/or JABB, or the full Kontact 2 player?
I use GPO and JABB and the players included in the programs. What you're trying to do isn't possible in those players, I'm fairly sure. The advanced Kontact I have no experience with.
Apparently you think you'll be more comfortable using a pedal instead of the mod wheel for sending cc1 to the instruments, correct?
--If you want to re-direct controller data that way, you do that from your keyboard or control surface, or DAW. If none of those offer a way to change controller assignments on hardware, then there are utilities (some posted at the Garritan site I believe) which will translate one controller into another on the fly.