I would like to be able to use CC64 via a momentary contact foot pedal to latch and unlatch the track arpeggiator. Ideally, it would be nice to function as an on/off toggle. Using the accepted Remote Control method, the foot pedal changes the state of the button, but not the underlying functionality (latch on/latch off).  As a result, the button status and the latch function get out of sync. Also, I would like to use MIDI to control other arp functions. How can I do this?