Trying to make a script for a game work by using dual monitor

[Superjaime]

Hi. I got a script for a videogame. This script doesnt work unless you run the game in windowed borderless. I was wondering if there was a way to run the game in fullscreen mode in one monitor and the script in the other one.
Basically, make the script "look" at screen B instead of screen A.

If not possible, I could just mirror the screen using OBS on the second screen and make the script work with that right? It should be the same and I get to play on fullscreen + script. If theres any commands for this let me know.
edit: I got it. All I need is a way to make the script work with the secondary monitor instead of the name of the process.
nvm it doesnt work. if you got any tips let me know
Thanks.

[Spawnova]

It would help to tell us what your script is trying to do that doesn't work in fullscreen. =P

[evilC]

"All I need is a way to make the script work with the secondary monitor instead of the name of the process"
Highly ambiguous, could mean any number of things.