My code only reads nil from datastore, help?

Hi guys. Im trying to create a position saver with datastore. This part below is how i saved the data. The second part is where it reads nil aways instead of the saved value.

Why is this happening?

-- saving:
local playerUserId = "Player_"..player.UserId
	local character = sessionData[playerUserId].Char
	sessionData[playerUserId].X = character.HumanoidRootPart.CFrame.Position.X
	sessionData[playerUserId].Y = character.HumanoidRootPart.CFrame.Position.Y
	sessionData[playerUserId].Z = character.HumanoidRootPart.CFrame.Position.Z
	sessionData[playerUserId].x = character.HumanoidRootPart.CFrame.LookVector.X
	sessionData[playerUserId].y = character.HumanoidRootPart.CFrame.LookVector.Y
	sessionData[playerUserId].z = character.HumanoidRootPart.CFrame.LookVector.Z
	print("saved X =",sessionData[playerUserId].X)
		local tries = 0	
		local success
		local errormsg
		repeat
			tries = tries + 1
			success, errormsg = pcall(function() playerData:SetAsync(playerUserId, sessionData[playerUserId]) end)

-- reading:
local data 
	local sussess, errormsg = pcall(function() data = playerData:GetAsync(playerUserId) end)
	if data then -- se tiver
		warn("DataStore downloaded for", player)
		sessionData[playerUserId] = data
		print("reading X =", sessionData[playerUserId].X) -- prints nil

	spawn(function() -- this part is constanty atualizing character info for when player leaves.
		while saving and player.Character do
			if character.Humanoid.SeatPart ~= nil then
				seat = character.Humanoid.SeatPart
			end
			if seat then
				sessionData[playerUserId].Vehicle = character.Humanoid.SeatPart.Parent.Name
			else
				sessionData[playerUserId].Vehicle = "None"
			end
			sessionData[playerUserId].Char = player.Character
			print(character, "saving")
		wait(2)	
		end
	end)

Notes: I checked that "sessionData[playerUserId].Char" is saving corectly with all infos needed. Also I tried putting a generic number instead of Position.X and it keeps returning nil instead of the number, to make sure I can save Position.XYZ in datastore. The "data" variable is sussessfuly returning a table. All the data saved comes just as "nil nil nil nil".

Is it possible to be corrupt data or something like this?

Do this script:

local DataStore = game:GetService("DataStoreService")
local ds1 = DataStore:GetDataStore("PositionSave")

game.Players.PlayerAdded:Connect(function(Player)
    local leaderstats = Instance.new("Folder")
    leaderstats.Name = "leaderstats"
    leaderstats.Parent = Player

    local Pos = Instance.new("CFrameValue")
    Pos.Name = "PlayerPosition"
    Pos.Parent = leaderstats
    Pos.Value = ds1:GetAsync(Player.UserId) or CFrame.new(workspace.StartPart) --Make a Part in Workspace called StartPart and put it where players spawn if it's their first time playing.
    Player.Character.Head.CFrame = CFrame.new(Pos.Value)
    ds1:SetAsync(Player.UserId, Pos.Value)
    print(Player.Name.."'s Position was successfully loaded!"
end)

game.Players.PlayerRemoving:Connect(function(Player)
    Pos.Value = Player.Character.Head.Position
    ds1:SetAsync(Player.UserId, Pos.Value)
    print(Player.Name.."'s Position was successfully saved!")
end)

It may or may not work, by mark as solved if it did! If it didn't get word to me and I'll try help again.