Attempting to save a vector3 value but script is impossible to make!!??

I am trying to make it so that when the player places an object, there will be an instance called SaveRequest, its parent is in

game.Players.LocalPlayer.HiddenStats.ItemPos

and I am trying to save the value and load it when the player joins back in the game but it is LITERALLY IMPOSSIBLE, Someone, come on, please help me D:

local DataStore = game:GetService("DataStoreService"):GetDataStore("ForSnapToGrid")

_G["Inventory"] = {}
game.Players.PlayerAdded:connect(function(player)
	print("Found player")
	
	local stats = Instance.new("Folder", player)
	stats.Name = "HiddenStats"
	ObjectPos = Instance.new("Folder", stats)
	ObjectPos.Name = "ItemPos"
	local Gold = Instance.new("IntValue", stats)
	Gold.Name = "Item Data Store Name"
	Gold.Value = 0
	local key = "player-"..player.userId
	
	if game:GetService("RunService"):IsStudio() then
	
	-- else
	savedValues = DataStore:GetAsync(_G["Inventory"], key)
	print(_G["Inventory"].Value)
	print("Finding saved items")
	if savedValues then
		print("Getting items")
		--Save format: {points, coins}
		Gold.Value = savedValues[1]
		a = 1
		for _, v in pairs(_G["Inventory"]) do
			local newVector3Value = Instance.new("Vector3Value", ObjectPos)
			newVector3Value = Vector3.new(v)
		end
		print("Fetched items")
	else
		print("Making storage")
		local valuesToSave = {Gold.Value, _G["Inventory"]}
		DataStore:SetAsync(key, valuesToSave)
	end

	end
end)



game.Players.PlayerRemoving:connect(function(player)
	for _, v in pairs(ObjectPos:GetChildren()) do
			v.Value = Vector3.new(savedValues[a]) -- Reminder: Since the folder gets emptied when the player leaves, this won't work!
			a = a + 1
			print(a)
			table.insert(_G["Inventory"], v.Value)
	end
	local key = "player-"..player.userId
	for _, v in pairs(_G["Inventory"]) do
		print(Vector3.new(v))
	end
	DataStore:SetAsync(_G["Inventory"], key)
end)

Attempted script ^

And there is no errors :(