WAPlugin for manage MADescription priority

Hi, i'm interested to display and change the priority of MADescription components when the browser display Halos. For example i have a class with descriptionA, descriptionB. For display the priority i change the WAClassnameHaloPlugin renderOn: method. For change i create the WAPriorityHaloPlugin. In the relative execute method i test if component is anMAComponent : self target description respondTo: #priority . If yes i,m interested to open the Browser or WABrowser on the relative descriptionA. The first question is: how i can define the name of descriptionA from anObject with magritte structure ? into execute context of WAPriorityHaloPlugin i see aObject with memento, description, accessor ..... but i d'ont found link to the relative generating descriptionA. The second question is: after change the descriptionA with the WABrowser and return to the halo browser how i can update the view to reflect the change ? i have do some test but for now ti need to close and reopen the view. Thanks for any considerations. Dario