Reprogramming floorboard

[sambo]

Hey all...

I'm making a floorboard project, but i only want 5 preset buttons (keep size down and such).

I was wondering if it was possible to reprogram the floorboard so that every time you went up a bank, it would send program change messages as follows

Bank 1 --> PC 1-5

Bank2 --> PC 6-10

Bank 3 --> PC 11-15

etc etc.

I'm not really sure about what the code at the bottom of buttons.inc is doing (the Button Program Changed bit). if someone could help or point me int he right direction that'd be amazing :D

ta

S