I fixed this script to make it deal damage but the cool down wont work? more in the description...

local canattack = true
if canattack == true then
    script.Parent.Touched:Connect(function(hit)
        if hit.Parent:FindFirstChild("Humanoid") then
            hit.Parent.Humanoid:TakeDamage(5)
            canattack = false
            wait(100)
            canattack = true
        end
    end)
end

The cool down wont work, as well as when i change the player's Max health + health to 500~~~~~~~~~~~~~~~~~ local player = game.Players.LocalPlayer local char = player.Character

char.Humanoid.MaxHealth = 500 char.Humanoid.Health = 500

after the humanoid got damaged by the part it will be lower then 100
Any clue?

Put the function on line 2 and it will work.

local canattack = true script.Parent.Touched:Connect(function(hit) if canattack == true then if hit.Parent:FindFirstChild("Humanoid") then hit.Parent.Humanoid:TakeDamage(5) canattack = false wait(5) canattack = true end end end)

No idea why but it works, this is what matters.

The reason your cooldown does not work is that by the time you change canattack to false, your TakeDamage function has already been executed.

local canattack = true

if canattack == true then
script.Parent.Touched:Connect(function(hit) 
	if canattack == true then
		canattack = false
		if hit.Parent:FindFirstChild("Humanoid")  then
			canattack = false -- now if players try to spam touch, they can't because canattack is set on false
			hit.Parent.Humanoid:TakeDamage(5)
			wait(100)
			canattack = true
		end
	end
end)
end

Hope this helps!

(Edit: Try this for your cooldown.)

local char = game.Players.LocalPlayer.Character

maxHealth = char:FindFirstChild("Humanoid").MaxHealth + 400

char.Humanoid.Health = maxHealth