Not sure why my script doesn't work

[Fyriiee]

on right click:
    if player's tool is snowball:
        if {cooldownsb.%player's uuid%} is false:
            set {cooldownsb.%player's uuid%} to true
            wait 1 seconds
            give player 1 snowball
            set {cooldownsb.%player's uuid%} to false

Above is my code for my server, which is supposed to give a snowball every time I throw it after 1 second. I have no skript plugins and I'm not sure why the script isn't working. I simply do not receive a snowball. Any help is appreciated

 

[bpitcher2013]

on right click holding Snowball:
    if player's tool is snowball:
        set {_waited} to difference between {snow.%player%.lastused} and now
        if {_waited} is less than 1 seconds:
            cancel event
            message "&eYou have to wait &a%difference between 1 seconds and {_waited}%"
            stop
        else:
            set {snow.%player%.lastused} to now
            wait 1 second
            give player snowball

this should work stack of 1 snowball only tho hope this helped