Chest GUI doesn't works right

[Equessy]

Spigot version: 1.8
Skript version: 2.2
Add-ons: SkQuery, Skellett, skRayFall

Code:

on rightclick with clock:
    cancel event
    if player is op:
        set {_num} to -1
        open chest with 3 rows named "&2Participants" to player
        loop all players:
            add 1 to {_num}
            format slot {_num} of player with apple named "%loop-player%" with lore "&7Prefix: %{prefix.%loop-player%}%" to close then run [execute player command "tele %loop-player%"]

 

[Lego_freak1999]

Add

Wait 1 tick

Between

Open chest

And

Loop all player's:

This should fix it

But i don't recomend using format slot please use tuske's gui