This Datastore won't save I'm getting really frustrated! Please help me!

local DS = game:GetService("DataStoreService"):GetDataStore("Levelz")
local StatFile = game:GetService("ServerStorage"):WaitForChild("StatFile")

game.Players.PlayerAdded:connect(function(player)
	local Key = "Player-"..player.userId

	local playerfolder = Instance.new("Folder", StatFile)
	playerfolder.Name = player.Name

	local strength = Instance.new("IntValue", playerfolder)
	strength.Name = "Strength"

	local defense = Instance.new("IntValue",playerfolder)
	defense.Name = "Defense"

	local sword = Instance.new("IntValue", playerfolder)
	sword.Name = "Sword"

	local slevel = Instance.new("IntValue", playerfolder)
	slevel.Name = "SLevel"

    local health = Instance.new("IntValue", playerfolder)
	health.Name = "Health"



	if DS:GetAsync(Key) then
		defense.Value = DS:GetAsync(Key)
		strength.Value = DS:GetAsync(Key)
		sword.Value = DS:GetAsync(Key)
		health.Value = DS:GetAsync(Key)
		slevel.Value = DS:GetAsync(Key)
	end

end)

game.Players.PlayerRemoving:connect(function(player)
	local Key = "Player-"..player.userId
	local AllStats = game.ServerStorage.StatFile[player.Name]:GetChildren()
	for i = 1, #AllStats do
		DS:SetAsync(Key,AllStats[i].Value, AllStats[i].Name)
	end

end)