How to make this work with Filtering Enabled?

So I've tried to do this but it seems it will work inside Studio but not inside the actual game, so it must be something to do with FE, so could someone please help me make it work with FE?

Client Side:

local codes = script.Parent.Parent.Codes -- location of the codes
local ds = game:GetService("DataStoreService")
local store = ds:GetDataStore("CodeSave")


script.Parent.MouseButton1Down:Connect(function()
	if script.Parent.Parent.codeBox.Text == "Alpha" then
		if codes.Alpha.Value == true then
			script.Parent.Parent.codeBox.Text = "Already Redeemed!"
		end
		if codes.Alpha.Value == false then
			codes.Alpha.Value = true
			game.ReplicatedStorage.GiveMoney:FireServer()
			script.Parent.Parent.codeBox.Text = "Redeemed!"
		end
	end
end)

Server Side:

game.ReplicatedStorage.GiveMoney.OnServerEvent:connect(function()
	local codes = game.StarterGui.CodeSystem.RedeemArea.Codes
	game.Players.LocalPlayer.leaderstats.Credits.Value = 
		game.Players.LocalPlayer.leaderstats.Credits.Value + codes.Alpha.Reward.Value
end)