Hi – First of all, really grateful to see such a great community here. I just got 2 PBF4s and I’m loving them! 
I’m a total noob to the Lua functionality and would like my Toggle Button (element 8), which activates a filter rack, to “activate” Pot (element 0) as a reverb send in Ableton. The issue is that I don’t want the send to be active when the button is off. So when I toggle the button off, I guess I need a 0 message going to the reverb send?
I can smell the “if” statements from here, but I’m confused on how to implement this.
Any help is greatly appreciated! Happy weekend to everyone 
B.