[Have a Problem] Cannot Insert Script into Test Button

[mastrgamr]

Im new to the Flash game. and im stuck on how I am supposed to put ActionScritpt into a Button I made, of Text.

I Made a TextBox, converted it into a button (F8), and for some reason I cannot put script into it =(( why it this?

Soruce: http://rapidshare.com/files/134848922/Webppage.fla.html