Why wont it stop damage?

local debounce = false

DMGPart.Touched:connect(function(part)
    local h = part.Parent:FindFirstChild("Humanoid")
	if h and not debounce then
        debounce = true
        h:TakeDamage(15)
       
print("Not Blocked")

	wait(0.8)
debounce = false
 
if h and h.WalkSpeed == 3 and not debounce then
h:TakeDamage(1)	 

print("Blocked")

	wait(0.8)
debounce = false

end
	end
		end)

If the targets WalkSpeed is equal to 3 then the damage should be 1 however it wont work.