[solved] Anti Team Kill does not deal damage to anyone?

Hi there, I am trying to make an Anti-TeamKill script. I am using the PaintballGun as a template for that. The problem is that instead of not dealing damage to teammates, it does not deal damage to everyone. The code is pasted below:

ball = script.Parent
damage = 20
teamD = 0
connection = ball.Touched:connect(onTouched)

function onTouched(hit)
	if hit.Name == "Bullet" then return end
	local humanoid = hit.Parent:FindFirstChild("Humanoid")
	connection:disconnect()
	if humanoid ~= nil then
		tagHumanoid(humanoid)
		local target = game.Players:GetPlayerFromCharacter(hit.Parent)
		if hit.Parent ~= nil then
		if game.Players:GetPlayerFromCharacter(hit.Parent.Name) ~= nil then
			if target.TeamColor == script.Parent.creator.Value.TeamColor then
				humanoid:TakeDamage(teamD)
			elseif target.TeamColor ~= script.Parent.creator.Value.TeamColor then
				humanoid:TakeDamage(damage)
			end
			end
		end
		if hit.Name == "Head" then damage = damage * 3 end  
		humanoid:TakeDamage(damage)
	else
	end
	ball:remove()
end

function tagHumanoid(humanoid)
	-- todo: make tag expire
	local tag = ball:findFirstChild("creator")
	if tag ~= nil then
		local new_tag = tag:clone()
		new_tag.Parent = humanoid
		game.Debris:AddItem(new_tag, 1)
	end
end

wait(5)
ball:destroy()

end

wait(5)
ball:remove()

The script runs a function which test whether the target's TeamColor is the TeamColor of the shooter (creator). But instead of doing that it does not deal damage at all. If you find any problem please let me know what errors I have made. Thank you for reading :)

One, you connect .Touched before you define the function.

Two, you disconnect the connection before you are even sure it hit a player.

Three, the value of the ball's original tag might be incorrect. Also, you tag hit humanoids for seemingly no reason.

Four, you try game.Players:GetPlayerFromCharacter(hit.Parent.Name). The parameter is supposed to be a character.

BTW: One, don't use :remove() unless you need to restore the ball. Use :Destroy(). Two, you can simply say if var then rather than if var~=nil then. Three, you should compare Teams rather than TeamColors.