MOD POKEMON RUBY 2.0

[BlackStarHacker]

I need help!
I'm working on a new version of an RTC resetting mod for pokemon ruby that is more easy to replicate for any version of the rom(different languages, romhacks, ecc.)
The existing rom mod is this.
So i installed ghidra but I didn't manage to connect debugger to mGBA, so I searched for using the mGBA integrated Debugger and I found this https://m.youtube.com/watch?v=dQLp5i8oS3Y.
In this video we can see how he manged to find the right part of code using watch, you can suggest me a way ot replicate in gba?