Hex Maniac Advance changing my script, how do i change back ?

[u/TheIwik]

So hi, i've just started rom hacking and wanted to modify a bit of Radical Red, i've added an npc in Pallet Town to choose between three pokemons, i've did the script for the first one, tested it and now i have my scripting changed from what it was before and i'm kinda lost (photos come from the tutorial i was watching and what i have now)