Inventory See Skript

[Enchanted_Reeses]

Now before you reply to this with "Just Use Open Inventory or Essentials" I'm doing this for fun and understanding

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command /invsee [<offline player>]:
    permission: op
    trigger:
        open inventory of arg-1 to player
command /invsee2 [<offline player>]:
    permission: op
    trigger:
        set {helmet} to arg-1's helmet
        set {chestplate} to arg-1's chestplate
        set {leggings} to arg-1's leggings
        set {boots} to arg-1's boots
        set {sheild} to arg-1's offhand tool
        set {user} to arg-1
        set metadata tag "invsee2" of player to chest inventory with 1 rows named "%{user}%'s Inventory"
        set slot 0 of metadata tag "invsee2" of player to {helmet}
        set slot 1 of metadata tag "invsee2" of player to {chestplate}
        set slot 2 of metadata tag "invsee2" of player to {leggings}
        set slot 3 of metadata tag "invsee2" of player to {boots}
        set slot 4 of metadata tag "invsee2" of player to {sheild}
        open (metadata tag "invsee2" of player) to player
on inventory click:
    if event-inventory = (metadata tag "invsee2" of player):
        if index of event-slot is 0:
            wait 0.2 seconds
            set {user}'s helmet to event-slot
        if index of event-slot is 1:
            wait 0.2 seconds
            set {user}'s chestplate to event-slot
        if index of event-slot is 2:
            wait 0.2 seconds
            set {user}'s leggings to event-slot
        if index of event-slot is 3:
            wait 0.2 seconds
            set {user}'s boots to event-slot
        if index of event-slot is 4:
            wait 0.05 seconds
            set {user}'s offhand tool to event-slot

 

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Now this skript could be made prettier if I had combined the gui's, but it works, kinda
 

It's a bit glitchy when you put armor on for some reason, just a bit of help would be nice, I've been trying to solve this for around a week, and this is all i got, still a bit broken, would love the help if you have idea's