Variable wont update when promted to

[Mark Erfurt]

Hi so I am working on this gui-menu skript where you can upgrade your armor.
I chose to save and display the "level" of the players armor with a numeral variable. However, for some reason it wont update, it just wont. I tried defining it as a number with:
variables:
{_var.%player%} = 0
that however, did nothing. Please help.

on inventory click: if name of event-inventory is "&b&lUPGRADE": if index o - Pastebin.com

EDIT: I should probably mention i only have
Skript and skript-gui installed.

 

[lotzy]

You use local variables instead of globals, read about difference of global and local variables.

 

[Mark Erfurt]

You use local variables instead of globals, read about difference of global and local variables.

I'm not sure where to read about this tbh. I tried searching around but didn't find anything specific that helped.