Tactical Battle System Script Help

[Ghost275]

I've been trying to implement a tactical battle script into my RPG, you know, like Final Fantasy Tactics Advance.
I have a script for it but it doesn't work.
The script was made by Pie Bunker#0000 by Nick or that's what it says in the script.
It comes up when many errors ending up in me deleting the whole script.
Any help please?

Thanks in advance.

 

[Ghost275]

Bump.