40/60Jam

Does anyone know if it's possible to control the auto-accompaniment on a PX-330 using the Roland PK-5 pedal unit? I can get it to play bass notes on my spit keyboard, but would like it to trigger the auto accompaniment also. Then I can play guitar while playing chord accompaniment using the pedal unit. If I could get that to work I think I'd be able to also use the Casio play function (hit 2 notes) to get minor chords.