Saving leaderstats and other values does not work?

So I have a Leaderboard and I'm trying to save but it doesn't work! I tried on every single save script... No hope.

-- This is Simple Data Persistance for your game :D
-- Just put this into the Workspace and you can save multiple scores in your game when 
-- players enter and leave :)
-- WARNING: You need to have leaderstats with at least one stat to be saved in it
-- or this script is pointless and won't work :)
-- By: CloneTrooper1019
-- Feel free to erase all this green text. I don't care. 
-- Im just glad you are using my script :)

--------Don't edit below unless you know what your doing--------

function onPlayerEntered(player)
wait(5)-- Give the game a moment to find the player instead of shooting instantly.
player:WaitForDataReady() -- Gotta have this
repeat wait(0.01) until player:FindFirstChild("leaderstats") -- waits for the stats.
if player.DataReady then -- A little pointless But whatever :)
if player:findFirstChild("leaderstats") then
local score = player.leaderstats:GetChildren() -- Were going to find some scores. 
for i = 1,#score do
local ScoreLoaded = player:LoadNumber("Halo"..score[i].Name.."") -- This looks for the score.
wait() -- Wait for the score to load.
if ScoreLoaded ~= 0 then
score[i].Value = ScoreLoaded
end
end
end
end
end

function onPlayerLeaving(player) -- We gotta fire this before the player leaves.
if player:findFirstChild("leaderstats") then
local score = player.leaderstats:children() -- Targeting the scores before the player is gone
for i = 1,#score do
player:SaveNumber("Halo"..score[i].Name.."", score[i].Value) -- Saving the score.
end
end
end

game.Players.PlayerAdded:connect(onPlayerEntered)
game.Players.PlayerRemoving:connect(onPlayerLeaving)
print("Save system Has been Successfully loaded!")

I am using this.

Script 2:

-- This is Simple Data Persistance for your game :D
-- Just put this into the Workspace and you can save multiple scores in your game when 
-- players enter and leave :)
-- WARNING: You need to have leaderstats with at least one stat to be saved in it
-- or this script is pointless and won't work :)
-- By: CloneTrooper1019
-- Feel free to erase all this green text. I don't care. 
-- Im just glad you are using my script :)

--------Don't edit below unless you know what your doing--------

function onPlayerEntered(player)
wait(5)-- Give the game a moment to find the player instead of shooting instantly.
player:WaitForDataReady() -- Gotta have this
repeat wait(0.01) until player:FindFirstChild("CoinFactor") -- waits for the stats.
if player.DataReady then -- A little pointless But whatever :)
if player:findFirstChild("CoinFactor") then
local score = player.leaderstats:GetChildren() -- Were going to find some scores. 
for i = 1,#score do
local ScoreLoaded = player:LoadNumber("Halo"..score[i].Name.."") -- This looks for the score.
wait() -- Wait for the score to load.
if ScoreLoaded ~= 0 then
score[i].Value = ScoreLoaded
end
end
end
end
end

function onPlayerLeaving(player) -- We gotta fire this before the player leaves.
if player:findFirstChild("CoinFactor") then
local score = player.leaderstats:children() -- Targeting the scores before the player is gone
for i = 1,#score do
player:SaveNumber("Halo"..score[i].Name.."", score[i].Value) -- Saving the score.
end
end
end

game.Players.PlayerAdded:connect(onPlayerEntered)
game.Players.PlayerRemoving:connect(onPlayerLeaving)
print("Save system Has been Successfully loaded!")

Can anyone help me getting this to work? Is it a Studio API issue? I dont know.