why doesn't my Debounce work? I think i typed it right?

local thispart = script.Parent
local Debounce = false
function oof(theplayer)
	if theplayer.Parent:FindFirstChild("Humanoid", false) and Debounce == false then
    Debounce = true
	theplayer.Parent.Humanoid.Health = theplayer.Parent.Humanoid.Health - 10
	print("you're dying")
	Debounce = false
	wait(2)
	end
	if theplayer.Parent.Humanoid.Health == 0 and Debounce == false then
		Debounce = true
		print("game over!")
		Debounce = false
		wait(1000)
	end
end
thispart.Touched:Connect(oof)

this doesn't work for some reasons