Need help with Gui skripting with kits

[youMADison]

I am building a kit pvp server and i watched the video of trent on how you skript a GUI and i have done so, added the item and everything, I would like to make it so that when a player clicks on the item, it removes items from their inventory, and gives them the item/ kit, i want it to go based off of 

command /kitui:
    trigger:
        open virtual chest inventory with size 1 named "Kit" to player
        format gui slot 4 of player with paper named "&bStarter Kit"  to run:
            
            so its easier for me to understand.

[_Tarna_]

You can use clear player's inventory to clear their items. Then give them the kit contents using give player diamond sword or what ever items you want to give them. 

[youMADison]

I was able to resolve this issue on my own and add another:

command /kitui:
    permission: kitlook
    trigger:
        open virtual chest with size 1 named "KITS" to player
        format gui slot 0 of player with paper named "&bStarter Kit" to run:
            execute player command "/kit starter"
        format gui slot 1 of player with iron ingot named "&bIron Kit" to run:
            if player has 10 emeralds:
                if player has permission "ironkit":
                    remove 10 emerald from player's inventory
                    execute player command "/kit iron"
                    send "iron kit has been purchased, 10 emerald have been removed from your inventory"
                else:
                    send "no permission"
            else:
                send "&cYou dont have 10 emeralds!"