public String impersonar() {

	    resolveDataBinding(IMPERSONAR_PROPERTY_BINDINGS, this, "impersonar.this", true, false);

	    
		try {
			
		    IContext context;			
			context = ContextFactory.acquireContext(true);
 
		    IBizPolicyManager bpm = (IBizPolicyManager) PortalSystem.getBizPolicyProvider(); 
		    IDirSystemBizPolicy dirSystemPolicy = (IDirSystemBizPolicy) bpm.getBizPolicy(IBizPolicyNames.DIRECTORY_SYSTEM); 
	
		    // lookup user by UID 
		    		    
		    IDirUser user = (IDirUser) dirSystemPolicy.lookupPrincipalByID(context, "anotherUser", IDirSystem.TYPE_USER); 
		    IThingID userThingID = user.getDirectoryPrincipalID();		    
		     
		    boolean currentIsAdmin = context.isAdminSession();
		    
		    context.impersonate(userThingID, currentIsAdmin );
		    
		    getFacesContext().getExternalContext().redirect("http://buadaix001:8585/SSO?command=forceShell&shellURI=shell.CustomInboxShell&returnUrl=/Custom.Inbox"); 
		    
			return OUTCOME_OK;
		
		} catch (Exception e) {
			error(e.getMessage());
			log(e);
			return OUTCOME_ERROR; 
		}		    

	}