How do you check if player has reedemed a code?

Hi, I have tried many attempts to make an twitter code gui. I did make it work, but I wanted to add another feature which is to check if the player has already redeemed the code. I tried countless times and it never worked, I would like someone to explain to me how to do it properly.

Here is the code:

local ifowned = false

script.Parent.MouseButton1Click:connect(function() if script.Parent.Parent.TextBox.Text == "code" then script.Parent.Parent.TextBox.Text = "reedemed!" wait(0.5) script.Parent.Parent.TextBox.Text = "enter code here" ifowned = true else script.Parent.Parent.TextBox.Text = "Invalid code" wait(0.5) script.Parent.Parent.TextBox.Text = "enter code here" if ifowned == true and script.Parent.Parent.TextBox.Text == "code" then script.Parent.Parent.TextBox.Text = "already reedemed" wait(0.5) script.Parent.Parent.TextBox.Text = "enter code here" end end end)

don't mind me if I make spelling mistakes in the script. Sorry I don't know how to use the code block, because I don't know how to use it.

local ifowned = false
local tbox = script.Parent.Parent.TextBox

script.Parent.MouseButton1Click:connect(function()
	if tbox.Text == "code" then
		print("reedemed!")
		ifowned = true
	else
		print("invalid code")
		if ifowned == true and tbox.Text == "code" then
			print("you already reedemed code")
		end
	end
end)

here is my code block. I checked everything in the output and works but the redeemed thing is not working. Don't mind the spelling errors in the script.