Problem with Bean

Hai friends,

I have created a bean which contains a dialog box in it. I am using this bean in a My frame. Say i have a button on the dialog box of the bean, and another button on the My frame. On the button click of the My frame i create the bean and show the dialog box of the bean. on the button click of the bean dialog box, How My Frame knows that , Bean dialog box button was pressed?

2)How the bean notofies to external programs that, the button was pressed?
3) or shall i write my custome event on my bean dialog box

If possible , pls Give me an example for this situation...