I'm reprogramming the "select" buttons on my APC40mkII to include some groups of projection zones, using code similar to the following: ToggleSelectZone 1,2,3,4,5,6,7 FocusZone 1 Exit The buttons are selecting the projection zones as expected. However, I would like to include MidiOut code to toggle the light on and off on the APC40mkII button. How can I do this? Additionally, I would also like to program some main grid buttons on a second APC40mkII to turn on QuickFX. I have figured out how to program the buttons to select the QuickFX. But, I know the code should be different here for toggling the state of the button light, since it won't just toggle on and off with the button press, but will also need to turn off if another button is pressed. I'm sorry if this is unclear. I'm just learning PangoScript. I've found MidiOut and understand that. I just don't know how to tell it "If this button is pressed, send this midi out command, and if the button is pressed again, or another button is pressed, then send this other midi out command."