Why won't hat button in GUI make hat stay on player?

Hi there, I am still working on a player customizer GUI, and I made a hat GUI for it. Well, it was all working perfectly until I can't remember what happened. It does work, yes, but not how I want it. You see, when you press a button, the hat goes on the player, but then disappears. Here's the script:

Player = script.Parent.Parent.Parent.Parent.Parent.Parent.Parent
Human = Player.Character

debounce = true

function onClicked(mouse)

if debounce == true then
    debounce = false
    Hat = Instance.new("Accessory")
    Handle = Instance.new("Part")
    Hat.Name = "Hatino"
    Handle.Name = "Handle"
    Handle.Parent = Hat
    Handle.Position = Human:findFirstChild("Head").Position
    Handle.formFactor = 0
    Handle.Size = Vector3.new(1,1,1)
    Handle.TopSurface = 0   
    Handle.Locked = true
    script.Parent.Mesh:clone().Parent = Handle
    Hat.Parent = Human
    Hat.AttachmentForward = script.Parent.AttachmentForward.Value
    Hat.AttachmentPos = script.Parent.AttachmentPos.Value
    Hat.AttachmentRight = script.Parent.AttachmentRight.Value
    Hat.AttachmentUp = script.Parent.AttachmentUp.Value
    wait(1)
    debounce = true
end

end
script.Parent.MouseButton1Click:connect(onClicked)

Keep in mind that it is in StarterGUI and that it does work but disappears the next second. It's also in a normal script, not local, but I tried making it in local and had the same outcome.

Thank you!