hello 
my name is valmont (i'm french, perhaps my english is bad, i'm sorry ), i have a virus ti2 keyboard.
I have a problem, i don't know to assign my expression pedal (M-audio M-gear EX-p) with a parameter in the modulation matrix.
For example, i assign the parameter "expression" for the source, "cutoff 1" for the target, amount +63, but nothing happens when i push the pedal. I plugged my pedal on "ctrl" behind the virus, and i have a switch under the pedal to command M-audio keyboard or other keyboard (i swithed on "other keyboard").
somewhere perhaps i was wrong^^. pedal not compatible or i'm bad^^
thank you so much, and i hope you answer me^^