command /menu [<text>]:
    trigger:
        open chest with 1 rows named "FASTPK" to player
        wait 1 tick
        set player's current inventory's slot 4 to lime wool named "&aCHAT ON" with lore "Wlacz Chat"
        set player's current inventory's slot 5 to black wool named "&8CHAT CLEAR" with lore "Wyczysc Chat"
        set player's current inventory's slot 6 to black wool named "&4CHAT OFF" with lore "Wylacz Chat"
on inventory click:
    if inventory name of current inventory of player is "FASTPK":
        cancel event
        if clicked slot is 4:
            execute player command "chat on"
        if clicked slot is 5:
            execute player command "chat c"
        if clicked slot is 6:
            execute player command "chat off"