ANYONE HERE USED THE KGCSKILLCP SCRIPT?

And more specifically have any idea why the add_battle_skill method isn't working for me? I need to use it for the intro/tutorial battle in the game, and however I try and format it in the script box, it doesn't add the skill to the list of usable ones in combat, which causes obvious problems for the tutorial.

Here's an image of all the custom scripts I'm using in my game, along with the info for the add_battle_skill method:

Yeah he does.