How to check if a player has a gamepass? (SOLVED)

Here is a place to help you http://wiki.roblox.com/index.php?title=Game_Pass

here's some code of the wiki and a little edited by me

local passId = 0000000 -- change this to your game pass ID.

function isAuthenticated(player) -- checks to see if the player owns your pass 
    return game:GetService("GamePassService"):PlayerHasPass(player, passId) -- this method will check to see if player has the pass from the passId
end

function Start(plr)
    print(plr.Name .. " has bought the game pass with id " .. passId)
end

game.Players.PlayerAdded:connect(function(plr)
    if isAuthenticated(plr) then -- checks to see if player is authenticaded
        Start(plr) -- activate function
    end
end)