Why isn't this making the player take damage when being shooting at a block?

This script is supposed to make the person that shot it take 8 damage, unfortunately that only happens if you step on it! Why doesn't it work if you shoot it?

Part12 = script.Parent
function Hit(hit)
	local human = hit.Parent:FindFirstChild("Humanoid")
	if human ~= nil then
		human.Health =  human.Health -8
	end
end

Part12.Touched:connect(Hit)

Please help!!! Thank you!

-This is not my script-

The Touched event triggers when the geometrical representation of an instance that inherits from BasePart intersects that of another. When A intersects with B, A and B both fire a Touched event.

The script that you posted will only work in these circumstances:

• The weapon fires physical (BasePart inheriting) projectiles

• The projectiles that are fired are parented to the character Model of the Player

If you parent the projectiles to the character Model of the Player, this script will work. If your weapon does not use physical projectiles, but rather another method (such as ray casting) then your script will not work because the Touched event does not fire when detected by a ray.