In rich:dropDownMenu i have used binding to set the menuItem. i need to get the value of dynamically renender menuItem on selecting the item

[anandhinaveen]

UI bindings:

<rich:dropDownMenu direction="bottom-right" jointPoint="tr" 
                      submitMode="server" binding="#{backing_activityCreate.menuComponent}">
            <a4j:support event="onitemselect"  action="#{backing_activityCreate.changeActivityType}" >
              <f:setPropertyActionListener  value="#{backing_activityCreate.activityTypesMenu}" target="#{backing_activityCreate.selectedActivityTypeCode}" />
              </a4j:support>
                         </rich:dropDownMenu>

Backing Bean:

public void getDropDownMenuActivityTypes()
    {
        selectedActivityTypeCode = new AppComActivityType();
        activityTypesMenu = getActivityBaseEJB().getAllActivityTypesWhereParentActivityTypeIdIsNull(firmId);

        for (AppComActivityType menuItem : activityTypesMenu)
        {
            HtmlMenuItem htmlMenuItem = new HtmlMenuItem();
            HtmlMenuGroup htmlMenuGroup = new HtmlMenuGroup();

            List<AppComActivityType> childActivity = getActivityBaseEJB().getAllActivityTypesByParentActivityTypeId(firmId, menuItem.getActivityTypeId());

            for (AppComActivityType selectGroup : childActivity)
            {
                htmlMenuGroup.setValue(menuItem.getName());
                HtmlMenuItem htmlMenuItemSub = new HtmlMenuItem();
                htmlMenuItemSub.setValue(selectGroup.getName());
                htmlMenuGroup.getChildren().add(htmlMenuItemSub);
            }
                htmlMenuItem.setValue(menuItem.getName());
                menuComponent.getChildren().add(htmlMenuItem);
          }
    }

I am not able to get the select menuItem value from the <f:setPropertyActionListener>