Cannot store data to DataStoreService

[Cynacol]

I am making a game where there are codes, and once you use a code you cannot use it again. I am using the DataStoreService to store whether or not they have actually used the code. If they have, it will store a true value to a variable in the DataStoreService. Whenever they try to use the code, it will check if they have already used it first. I cannot figure out how to do this though: so here is the script to it. If you know how to do this, please help.

local dss = game:GetService("DataStoreService")
local codedatastore = dss:GetDataStore("PlayerCode")
local codeEvent = game.ReplicatedStorage.Code

codeEvent.OnServerEvent:Connect(function(Player, codeText)
	if Player:FindFirstChild(codeText) == nil then
		if codeText == "LAUNCH" then
			if not codedatastore:GetAsync(Player.UserId.."-launchCode") then
				local success, err = pcall(function()
					codedatastore:SetAsync(Player.UserId.."-launchCode", true)
				end)
				if success then
					Player.leaderstats["💰Coins"].Value += 10000
					Player.PlayerGui["E-R"].CodeFram.Code.Text = ""
					Player.PlayerGui["E-R"].CodeFram.Code.PlaceholderText = "Applied!"
					wait(1)
					Player.PlayerGui["E-R"].CodeFram.Code.PlaceholderText = "CODE HERE"
				end
			else
				Player.PlayerGui["E-R"].CodeFram.Code.Text = ""
				Player.PlayerGui["E-R"].CodeFram.Code.PlaceholderText = "Already used!"
				wait(1)
				Player.PlayerGui["E-R"].CodeFram.Code.PlaceholderText = "CODE HERE"
			end
		else
			Player.PlayerGui["E-R"].CodeFram.Code.Text = ""
			Player.PlayerGui["E-R"].CodeFram.Code.PlaceholderText = "Invalid code!"
			wait(1)
			Player.PlayerGui["E-R"].CodeFram.Code.PlaceholderText = "CODE HERE"
		end
	end
end)

[lilmazen1234 (MazenEz)]

There are lots of tutorials on how to do it even on the devforum

Simple Twitter Code System for Beginners

This is a relatively short overview on how to get started implementing a code system into your game. With this system, you can update and add codes in live time (short delay ~30s) so you do not have to shutdown servers! Step 1: Create an asset For this simple system, we will need to have an assetId handy. To do this, publish a blank model, decal, audio, or place to Roblox. Anything with an assetId that has a description will work! Step 2: Adding our codes To store our codes, we will need to …

[PokeDB99 (PokeDB)]

I would recommend searching some of the datastore tutorials on devforum, and looking at the devhub, to learn how datastores work. Also you should check out ProfileService! It’s extremely useful.