Script working and dying connected?

I have a script that when I pull out the tool, it is supposed to constantly teleport a part to right beneath me, so I can sort of walk around on air.

it works fine in singleplayer, but when I test it with more than one person, it only works for the person that died last. I'm a bit confused about how my character dying and the hammer working are tied together. Please help. (It is not something outside this code, I have taken the model out of the place I am working on, and it works the same.)

local part
local cPlayer
local hammer = script.Parent
local pos
local cClayer
function OnCharJoin(character)	
	repeat wait() until character	
	--game.StarterGui.ScreenGui.TextButton.Value.Value = character
	cClayer = character
	print("char added")
	
	ini()
end
print("hello tsst 3")


function playerJoin(player)
	cPlayer = player
	player.CharacterAdded:connect(OnCharJoin)
	part = Instance.new("Part")
	part.Anchored = true
	part.Size = Vector3.new(11, 2, 11)
	part.Parent = workspace
	part.Position = Vector3.new(0, 10, 0)
	print("plr joined")
end

game.Players.PlayerAdded:Connect(playerJoin)

function ini()
	print("plr intietated")
	while true do
		wait(0.1)
		if cClayer:FindFirstChild("Scaffold Hammer") then
		pos = cClayer.HumanoidRootPart.Position
		
		
		part.Parent = workspace
		part.Position = cClayer.HumanoidRootPart.Position + Vector3.new(0, -4, 0)

	
		end
	end
end