How to know if scripts are correct

[Minorz]

Hi guys,

I play with modified script made by a player i saw on twitch since Legion. This guy stop playing but i used to keep plyaing with his scripts and like to play with it.

But i think that some scripts are out of date or do not even work anymore since many update in retail.
I am bad at understanding scripts and update it by my own, i can do some ajustment but my knowledge are poor.

Doo you know how i can figure wich line of my script are being out of date or need an adjustment ?

Thanks for your help !