A damage script?

When a part touches a person can the part deal 40 damage on touching the person then remove then put a damage prevenatation it so it doesn't happen again. Because if a character touches it many scripts make it do 40 damage several times. Thanks!

Damage = 40
script.Parent.Touched:connect(function(t)
if t.Parent:FindFirstChild("Humanoid") then
t.Parent.Humanoid.Health = t.Parent.Humanoid.Health - Damage
end
end)

Put in the script.

local Touching = false
Damage = 40

script.Parent.Touched:connect(function(hit)
	hum = hit.Parent:FindFirstChild('Humanoid')
	if hum ~= nil and not Touching then
		Touching = true
		hum:takeDamage(Damage)
		Touching = false
	end
end)

put this Script into the part that's gonna Damage People...