controling prompt in Lingo

Hi!
I was wondering if anyone knows how to control the prompt in the text field using Ligo. I wrote an input form in Director but I would like to be able to put the prompt in the first text field. Right now the user can enter some values and click on the let say add button. Then I clear the text fields so more data can be entered but the prompt stays in the last used text field. I would like to be able to set the prompt in the first text field.

any help would be great.

Thanks

Mags