Perform an action triggered by change in "mouse_screen_[]"

Hi Andreas,

I'd like to automatically send a key command to a currently-running app when my cursor enters one screen or another.

Backstory: I've tried using Conditional Activation Groups to try and solve this, but I haven't been able to activate them without using some sort of manual trigger. I've concluded that the cursor's most recent change in screens should be the trigger. Can this be done?

Details: I'm trying to cycle scenes in OBS Studio based on which monitor I'm currently looking at and using (not which app I'm using, because some apps span multiple displays). After much trial and error, my conclusion is that using a change in a condition as the trigger itself (perhaps "mouse_screen_width") would be the most effective — except I'm unable to auto-activate this. Any ideas? Thank you!