i'm trying to add a menu to the portal group to be viewed only when i check in the portal group box but i didn't work i don't know why

    <menuitem id="sales_menu_sub_for_poral" name="Reporting"
              sequence="20" groups="base.group_portal"/>

    <menuitem id="sales_menu_no_sub_o" name="Sales"
              parent="sales_menu_sub_for_poral" sequence="30" groups="base.group_portal"/>

    <menuitem id="sales_menu_no_sub_o_go_po" name="Sales Analysis"
              parent="sales_menu_no_sub_o" sequence="40" action="sale.action_order_report_all" groups="base.group_portal"/>