Animation Debounce not functioning correctly?

I made a function in a module script that plays animations, specifically attack animations. It also slows the player down when the animation is playing. And with attack animations, comes animation cool downs, or debounce. Here is the function in the module script:

local AttackAnimationModule = {}

AttackAnimationModule.PlayAttack = function(AnimationTrack)
    if AttackDebounce == true then return end --AttackDebounce is already defined in the script  that uses the module script function

    AnimationTrack.Looped = false

    AnimationTrack:Play()

    AttackDebounce = true --Turn on cooldown

    Humanoid.WalkSpeed = 3 --Slow down player
    wait(1) --The animation length
    Humanoid.WalkSpeed = 16

    AttackDebounce = false --Turn off cooldown
end

return AttackAnimationModule

And here is the script that uses the function (LocalScript):

local UIS = game:GetService("UserInputService")
local Player = game.Players.LocalPlayer

repeat wait() until Player.Character --Load character
repeat wait() until Player.Character.Humanoid --Load humanoid

local Humanoid = Player.Character.Humanoid

local Attack = game.ReplicatedStorage.Attack
local AttackTrack = Humanoid:LoadAnimation(Attack)

local AttackAnimationModule = require(game.ReplicatedStorage.AttackAnimations)

local AttackDebounce = false

UIS.InputBegan:Connect(function(Input)
    if input.KeyCode == Enum.KeyCode.E then
        AttackAnimationModule.PlayAttack(AttackTrack)
    end
end)

When I run both scripts, the animations, and walkspeed work completely fine. But the debounce doesn't work. Any solutions?