variables:
    {wybrana.%player%} = false

on join:
    if {wybrana.%player%} is false:
        wait 5 tick
        open chest with 1 row named "WYBIERZ KLASE" to player
        set player's current inventory's slot 0 to stone named "Frakcja droidow" with lore "lore"
        set player's current inventory's slot 1 to dirt named "Frakcja wojownikow" with lore "lore"
    
    
on inventory close:
    if inventory name of current inventory of player is "WYBIERZ KLASE":
        if {wybrana.%player%} is false:
            send "&cWybierz klase!"
            wait 5 tick
            open chest with 1 row named "WYBIERZ KLASE" to player
            set player's current inventory's slot 0 to stone named "Frakcja droidow" with lore "lore"
            set player's current inventory's slot 1 to dirt named "Frakcja wojownikow" with lore "lore"
on inventory click:
    if inventory name of current inventory of player is "WYBIERZ KLASE":
        cancel event
        if clicked slot is 0:
            execute console command "pex user %player% group set Droid"
            send "daj wiadomosc" to player
            set {wybrana.%player%} to true
        if clicked slot is 1:
            execute console command "pex user %player% group set Wojownik"
            send "daj wiadomosc" to player
            set {wybrana.%player%} to true