Why is my Last Player Alive script not working?

So basically I am trying to make a script that finds the last player(s) alive. By using StringValues but it seems not to work I don't know why.

`  game.Players.PlayerAdded:connect(function(player)
	player.CharacterAdded:connect(function(character)
			Instance.new("StringValue", player)
	end)
	end)


function Alive()
	local player = game.Players:GetChildren()
	local D = player:findFirstChild("StringValue").Value == "Dead"
	local A = player:findFirstChild("StringValue").Value == "Alive"
	wait(1)-- game time
	if A == true then
		local Message = Instance.new("Message", workspace)
		Message.Text = (A.Name.."is the last player left!")
	end
end

Alive() `

Well, you only called the function once. If you want to check who is the last alive, you'll need to either have an event fired, or a while loop. In my script, I'll use a while loop. Secondly, in your script, it doesn't detect if that is the ONLY person alive. It just checks if they are alive, even though others could be. So:

game.Players.PlayerAdded:connect(function(p)
	p.CharacterAdded:connect(function(character()
		Instance.new("StringValue", p) -- This line is going to insert a value into the player, whenever they spawn. I either recommend having this in the PlayerAdded function by itself, or having a separate script remove it once they die, which would be tiresome. #MyFirstSuggestion
	end)
end)

-- I recommend having the following in a separate script. I myself haven't tested this, but I'm not sure if a while loop after an event is a good idea. I apologize if I'm wrong!

while wait() do
	alive = 0
	Last_Plr = nil
	for i,v in pairs(game.Players:GetPlayers()) do
		if v:findFirstChild("StringValue").Value == "Alive" then
			alive = alive + 1
			Last_Plr = v
		end
	end
	if alive == 1 then
		local Message = Instance.new("Message", workspace)
		Message.Text = Last_Plr.Name.." is the last player left!"
	end
end