notification profile in application client

I want to add notification profile in application client .So i add a menu item in <OpManager_HOME>\mapdata\menus\objectmenu.xml as below:

<MENU-ITEM name="opmanagerclient.mapdata.routermenu.Notifications">
<JAVA-UI action_value="com.adventnet.me.opmanager.client.wrapper.ClientScreensWrapper?screenName=DeviceSettings&objName=${objName}&mapName=${mapName}&panelName=Notifications" action_type="INVOKE_CLASS"/>
</MENU-ITEM>

But,sth is wrong ,the notification button does not display in left.as you can see in attached picture.

And i decompiled com.adventnet.me.opmanager.client.DeviceSettings,I think this java file has a bug,the code as below:

bg.add(general);
bg.add(monitoring);
// bg.add(notification);//i think you guys forget adding this line.so the notification button is invisible.
bg.add(services);
bg.add(snmp);
bg.add(menu);
bg.add(performance);