Hi,
The Web Dynpro Application Title always comes from the description of the Application. If you are on NW 7.02, you could use the set_window_title( ) method of application interface to set the title dynamically.
wd_this->wd_get_api( )->get_component( )->get_application( )->set_window_title( lv_title ). " lv_title = your dynamic title
hope this helps,
Regards,
Kiran