My script isn't working. Help?

My local script, when a projectile is fired, meaning, there is no direct contact, it's supposed to print the Player, and Humanoid.

local Player = script.Parent.Parent
 local mouse = Player:GetMouse()
function onKeyDown(key)
	
	Key = key:lower()
	if key == "z" then
		print("Hi")

	Game:GetService("Chat"):Chat(Player.Character.Head, "I'll finish you off with this last hit!")
	
	
	
	x = Instance.new("Part")
	x.Name = "x"
	x.Shape = "Ball"
	x.BrickColor = BrickColor.new("Really red")
	x.Size = Vector3.new(3,3,3)
	x.CanCollide = false
	        x.CFrame = Player.Character.Torso.CFrame*CFrame.new(0, 0, -12)

	s = Instance.new("Sparkles", x)
	y = Instance.new("BodyVelocity", x)
	y.maxForce = Vector3.new(math.huge, math.huge, math.huge)
	y.velocity = Player.Character.Torso.CFrame.lookVector*120
	x.Parent = Workspace
	kk = script.k:Clone()
	kk.Parent = x
	x.Name = Player.Name
	game:GetService("Debris"):AddItem(x, 7)
	
	kk.Disabled = false
	end
	
	
end
mouse.KeyDown:connect(onKeyDown)

function tagHumanoid(humanoid, player)
	local creator_tag = Instance.new("ObjectValue")
	creator_tag.Value = player
	creator_tag.Name = "creator"
	creator_tag.Parent = humanoid
	print(player.Name)
	print(humanoid.Name)
end

function untagHumanoid(humanoid)
	if humanoid ~= nil then
		local tag = humanoid:findFirstChild("creator")
		if tag ~= nil then
			tag.Parent = nil
		end
	end
end

This is the 2ND time in which I ask a question similar to this. The first time, they completely ignored what I said.