How do i make this humanoid shoot in the target direction?

torso = script.Parent.Torso
maxrange = 70
minrange = 20
target = nil
tor = nil

function findNearestTarget()
	plrs = game.Players:GetChildren()
	for i, plr in ipairs(plrs) do
		if plr.Character ~= nil then
			if plr.Character:findFirstChild("Humanoid") and plr.Character.Humanoid.Health>0 then
				tor = plr.Character.Torso
				if target == nil then
					if ((torso.Position - tor.Position).magnitude <= maxrange)  then
						if ((torso.Position - tor.Position).magnitude >= minrange) then
							target = plr.Character
						else
							target = nil
							script.Parent.Zombie:MoveTo(script.Parent.Head.Position, script.Parent.Head)
						end		
					else
						target = nil
						script.Parent.Zombie:MoveTo(script.Parent.Head.Position, script.Parent.Head)
					end
				end
			end
		end
	end
end

head = script.Parent:WaitForChild("Head")

function Shoot ()
	local ball = Instance.new("Part")
	ball.Name = "Ball"
	ball.BrickColor = BrickColor.new("White")
	ball.Shape = "Ball"
	ball.Size = Vector3.new(1,1,1)
	ball.CanCollide = false
	ball.CFrame = head.CFrame
	ball.Velocity = tor.CFrame*20
	ball.Parent = game.Workspace
end

while true do
	wait(.1)
	findNearestTarget()
	if target ~= nil then
		wait(2)
		Shoot()
		print ("Shooted")
	end
end

So, what this is supposed to do, is that when this humanoid has a target he shoots on its direction. But he shoots downward and not on the targets direction. Help?

the FrontSurface of the part that the ball ball comes out off has to Face ere he is Facing...