calling invalidate( ). from a second view.

I have view A and v B in a web dynpro. B is a popup. In the popup window i can add a row to a table which is shown in view A. Saving and closing view B I see the changes only after resetting view A (i do that with wd_this->invalidate( ).

My question how to call invalidate from the popup (b) so that i can see after the refreshed table in A?

I found some anwers here, but they were to abstract.

Can you maybe give me an example?

Regards

Ezi