I am trying to make an autoit script which allows the input of serial keys. They are in the format xxxxx-xxxxx-xxxxx-xxxxx-xxxxx. I am trying to emulate the same thing as when installing windows product serial key input box. If text is typed in it flows from left to right, and if text is deleted it flows from right to left. I know how to limit text to 5 characters within an input box, however I do not know how to create the text flow effect as described above.