Why won't my Script print a message when player is killed or kills?

I made a Script in ServerScriptStorage, it's deposed to detect if a player kills or gets killed and print when these events happen. The sword creates a creator tag in the humanoid but my script won't print the message. What's the problem?

Script:

local players = game.GetService("Players")

players.PlayerAdded:Connect(function(player)
	
	player.CharacterAdded:Connect(function(character)
		
		local humanoid = character:WaitForChild("Humanoid")
		humanoid.Died:Connect(function()
			print("You died!")
			if humanoid:FindFirstChild("creator") ~= nil then
				local Killer = humanoid.creator.Value
				print("You're the killer!")
			end
			
		end)
	end)
end)

Maybe try putting it in ServerScriptService.

local players = game.GetService("Players")

players.PlayerAdded:Connect(function(player)
	local character = player.Character or player.CharacterAdded:Wait()
	local humanoid = character:WaitForChild("Humanoid")
	local creator  = humanoid:FindFirstChild("creator")

	humanoid.Died:Connect(function()
		print("You died!")
	end)

	creator.Changed:Connect(function()
		if creator.Value ~= nil then
			local Killer = creator.Value
			print("You're the killer!")
		end
	end)
end)

I hope this helped!

The problem is in your first line of code, try this:

local players = game:GetService("Players")

you made a error on the first line

local players = game:GetService("Players")

players.PlayerAdded:Connect(function(player)

    player.CharacterAdded:Connect(function(character)

        local humanoid = character:WaitForChild("Humanoid")
        humanoid.Died:Connect(function()
            print("You died!")
            if humanoid:FindFirstChild("creator") ~= nil then
                local Killer = humanoid.creator.Value
                print("You're the killer!")
            end

        end)
    end)
end)

try this script