Cooldown

Hej napisal by mi ktos inny cooldown? wersja skriptu : 1.8.8

on rightclick with quartz:
    if name of player's tool is "&6Skok Mocy I":
        if player has permission "chestcommands.open.umiejetnosci.yml":
            set {czasrII} to difference between {opoznienierII.%player%} and now
            if {czasrII} is less than 50 seconds:
                send "&a&l[&2&lKlasa&a&l] &8>> &9Mozesz uzyc &6&lSkoku Mocy &9za &c&l%difference between 50 seconds and {czasrII}%&9!"
            else:
                set {opoznienierII.%player%} to now
                push the player upwards at velocity 1
                wait 1 second
                loop all entities within 3 meters of the player:
                    damage loop-entity by 10 hearts   

inny niz ten bo jak gracz inny uzyje skoku i wyjdzie to gracz kolejny ma zbugowany czas