How to set a string value as a text box text?

I'm making a GUI where you type in some text into a text box, and then when you press the "submit" button it sets the text in that text box to a string value inside of the starter GUI. The problem is when you press the submit button, it changes the value to blank even though there is stuff inside of the text boxes. This is the script that I'm using.

script.Parent.MouseButton1Click:Connect(function()
	game.StarterGui.value1.Value = script.Parent.Parent.textbox.text
end)

and in the text label there is

while wait(1) do
	script.Parent.Text = game.StarterGui.value1.Value
end

Can someone help?

The main problem that I see is that you are changing the starterGUI, which is different from the player gui, so you would need to tweak your code a little bit to look like this:

script.Parent.MouseButton1Click:Connect(function()
    game.Players.LocalPlayer.PlayerGui.value1.Value = script.Parent.Parent.textbox.text
end)

--text label text--

while wait(1) do
    script.Parent.Text = game.Players.LocalPlayer.PlayerGui.value1.Value
end