[Changing A Value] Died Event. UserData Value?

Im trying to create a script that changes the value on death. Please Help.

game:GetService('Players').PlayerAdded:connect(function(player)
	player.CharacterAdded:connect(function(character)
		player = game.Players:GetPlayerFromCharacter(character)	
		if player:FindFirstChild("InGame") then
		player.InGame:remove()
		character:WaitForChild("Humanoid").Died:connect(function()
			print(player.Name .. " has died!")
			game.Workspace.PeopleInGame.Value = game.Workspace.PeopleInGame.Value -1
		end)
		end
	end)
end)

Output: 22:11:19.638 - Workspace.PlayerHandler:8: attempt to perform arithmetic on field 'PeopleInGame' (a userdata value)

You forgot to access the 'Value' property of PeopleInGame. Also don't use deprecated methods

game:GetService('Players').PlayerAdded:connect(function(player)
    player.CharacterAdded:connect(function(character)
        if player:FindFirstChild("InGame") then
        player.InGame:Destroy()
        character:WaitForChild("Humanoid").Died:connect(function()
            print(player.Name .. " has died!")
            game.Workspace.PeopleInGame.Value = game.Workspace.PeopleInGame.Value -1
        end)
        end
    end)
end)

Also, if you're only trying to get the number of people ingame, you can use the NumPlayers property of Players.

print(game.Players.NumPlayers)