blackberry - How to use a button in a VerticalFieldManager to change parent screen? -

i have button in verticalfieldmanager. if user clicks on it, want wipe out screen , load new verticalfieldmanager.

currently in homepage, call custom manager returns verticalfieldmanager. because code builds verticalfieldmanager not on homepage , not extend mainscreen, doesn't have access screen methods.

how can go fixing issue?

if i'm understanding correctly screen has manager , manager has button want modify screen. this:

buttonfield button = new buttonfield("button"); button.setchangelistener(new fieldchangelistener(){        public void fieldchanged(field field, int context)        {             //the manager of field should verticalfieldmanager             //and manager of should screen.             manager screen = field.getmanager().getmanager();              screen.deleteall();             //now create new verticalfieldmanager , add whatever want        }  });