Multi Ball Nood question...

[TECH_SIDE]

How do I make a multi ball that will send a midi message to lets say turn on or off a effect or trigger a midi note when I touch, i.e. create a ball...I would like to be able to control a filter with the xy and turn the filter on/off when as i place my finger in the multi ball. Or use the xy to modulate a synth and have a midi note triggered when i touch/create the ball and release the note when i remove my finger...Im sure this is easy to do for some so please help me =) Thanks!

[Softcore]

Map the "z" variable to your desired midi message - "z" is 1 when a ball is touched, 0 when released.