How do you make a script that changes back to text when you click off of it?

So I made a GUI, but I need to know how to make it change it's text back to "Decal ID Here", when a player stops typing on it, and clicks on something else.

use this: while true do if script.Parent.Text == " " then script.Parent.Text = "Decal ID Here" end end

Thats the script text ^^^, paste that into script, well type that into script. then put script inside the TextBox.

What he said ^

Try this, it is to be put in a local script under the TextBox.

script.Parent.FocusLost:connect(function(enterPressed)
if enterPressed then
print("Focus was lost because enter was pressed!")
end
end)

Source http://wiki.roblox.com/index.php?title=FocusLost_%28Event%29