my double jump script wont work, why ?

heres the code, i used the Double Jump Tutorial on the wiki and i didnt copy and paste anything.

local UserInputService = game:GetService("UserInputService")

local LocalPlayer = game:GetService("Players").LocalPlayer
local Character
local Humanoid

local DoubleJump = false
local debounce = false 

UserInputService.JumpRequest:connect(function()
	if not Character or not Humanoid or not Character:IsDescendantOf(workspace) or Humanoid:GetState() == Enum.HumanoidStateType.Dead then
		return
	end
	
	if not debounce then
		debounce = true
		
		if not DoubleJump and Humanoid:GetState() == Enum.HumanoidStateType.Freefall then
			local torso = Character:FindFirstChild("tTorso")
		
			if torso then 
				torso.Velocity = Vector3.new(torso.Velocity.X, Humanoid.JumpPower * 1.2, torso.Velocity.Z)
				DoubleJump = true
			end
		end
		
		wait(0.2)
		debounce = false
		
	end
	
end)

local function CharacterAdded(char) 
	Character = char 
	Humanoid = char:WaitForChild("Humanoid")
end

if LocalPlayer.Character then
	CharacterAdded(LocalPlayer.Character)
end

LocalPlayer.CharacterAdded:connect(CharacterAdded)