options:
    nazwa.zombie: Zombie [lvl. 1]
on right click on player:
    if name of clicked entity is "NAZWA":
        if {misja.%player%.1} is not set:
            set {misja.%player%.1} to now
            send "Witaj. Mam do ciebie sprawe!" to player
            wait 7 ticks
            send "Idz i zabij 25 Zombie z 1 poziomem!" to player
            set {zab.%player%::zom1lv} to 0
        else:
            if {misja.%player%.1::koniec} is not set:
                if {zab.%player%::zom1lv} is less than 25:
                    send "Nie zabiles jeszcze 25 zombie z 1 poziomem!" to player
                else:
                    set {misja.%player%.1::koniec} to now
                    send "Wykonales misje!"
                    # NIŻEJ USTAWIASZ NAGRODY!
                    add 1 diamond to player's inventory
                    add 64 dirt to player's inventory
                    apply speed 10 to player for 5 seconds
                    # [...]
                    # WYŻEJ USTAWIASZ NAGRODY!
            else:
                send "Wykonales misje u mnie!" to player
on death:
    if attacker is a player:
        if name of victim is "{@nazwa.zombie}":
            if {misja.%attacker%.1} is set:
                if {misja.%attacker%.1::koniec} is not set:
                    if {zab.%attacker%::zom1lv} is less than 25:
                        add 1 to {zab.%attacker%::zom1lv}
                        send "Zabiles %{zab.%attacker%::zom1lv}%/25 Zombie z 1 poziomem!"