Why does this array read fine in one function, but empty in another?

I have tried reading the array variable Players by accessing it like module.Players from an outside script, and I have also had a getStat function which returned Players, however the getStat function (which was inside the module) read the array as empty, even though changeStat reads it as having one entry.

****statService (Module In ServerScriptService)

local module = {}
	module.Players = {}
	
	function checkPlayers(plr)
		for i = 1,#module.Players do
			if module.Players[i][1] == plr then
				return i
			end
		end
		return 0
	end


	module.changeStat = function(player,stat,value)
		local index = checkPlayers(player.Name)
		
		if index == 0 then

			module.Players[#module.Players+1] = {player.Name,0,0,0,0} --Player Name,K,D,Dm,H
			index = checkPlayers(player.Name)
		end
		
		module.Players[index][stat] = module.Players[index][stat] + value
		
		for a = 1,#module.Players do
			for b = 1,#module.Players[a] do
				print(b..": "..module.Players[a][b])
			end
		end
	end
	
return module

?????? Just do

game.Players:GetPlayers()

..

To any who have issues with Module Scripts and saving data, the issue was me using the command bar to test them. The command bar is at a more elevated environment which causes it's state to be essentially 'saved' when the game is played. This meant that even if I added an element to array, if I tried to access it using the command bar it wouldn't see it.

To counteract this issue, you need to test modules with scripts / local scripts.