[SOLVED] Global Variable in skript

[ctrlcheeb]

EDIT: Dumb mistake I didnt notice the _ in the variable name

Hi, I was just making a simple script for my server where people can cash in tokens earned throughout for items.
I had one gui which when interacted with would set the {_cost} variable to the price. Then if they put the correct amount of tokens equal to the {_cost} variable it should work.

However since I am setting the cost variable in a different if statement outside of the scope the code doesn't work.
Here is the code I am referring to

on inventory click:
    set {_guibuy} to a new chest inventory with 6 rows named "&8&lBuy Rewards"
    set slot 0,1,2,3,4,5,6,7,8,9,10,11,12,14,15,16,17,18,19,20,24,25,26,27,28,29,30,32,33,34,35,36,37,38,39,40,41,42,43,44,45,46,47,48,50,51,52, and 53 of {_guibuy} to grey stained glass pane named " "
    set slot 13,21,23 and 31 of {_guibuy} to red stained glass pane named " "
    set slot 49 of {_guibuy} to emerald block named "&aGive Tokens"
    if name of event-inventory is "&8&lHalloween Rewards":
        if index of event-slot = 10:
            close player's inventory
            open {_guibuy} to player
            set {_cost} to 2


    if name of event-inventory is "&8&lBuy Rewards":
        if index of event-slot = 49:
            if size of lore of slot 22 of player's current inventory is not 0:
                if slot 22 of player's current inventory is pumpkin pie:
                    if the item amount of slot 22 of player's current inventory is equal to {_cost}:
                        cancel event
                        wait 2 ticks
                        close player's inventory
                        play sound "entity.player.levelup" to the player

If there is any way to maybe make the edited value of {_cost} global or return it and access the edited value later on that would be greatly appreciated
thanks