i cant tell if im really slow or not but this isnt working should i use a local function

[novel flame]

local player = game.Players.LocalPlayer
local char = player.Character or player.CharacterAdded
local hum = char:WaitForChild("Humanoid")

local jumpcd = false
local jumpcdtime = 2

if jumpcd == true then
 hum.JumpPower = 0
else
 hum.JumpPower = 50
end

if hum.Jump == true then
 jumpcd = true
 wait(jumpcdtime)
 jumpcd = false
end

[loud igloo]

this might help https://create.roblox.com/docs/tutorials/fundamentals/coding-1/coding-fundamentals

[upbeat basalt]

change player.CharacterAdded to player.CharacterAdded:Wait()

also this just runs once

once yous tart the game