Privilage filter fail to work

Hi:


We create a customized privilage named "Global.IBMDataProtection" and use this privilege to control show/hide some extension. However, I found it fail to work. 


login in by User administrator, vsphere web client  always show this extension ,it's is good.


But when I tried to use a common user, and grant this privilege to it, vSphere web client fail to display the extention in left-hand navigator bar.


PS: We also use Datacenter.IBMDataProtection to controll those extension points on/under datacenter, it works well. 


*plugin.xml *file:  <extension id="com.ibm.tivoli.tsm.homeCategory">

             &lt;title&gt;#-configuration&lt;/title&gt;

             &lt;parentUid&gt;vsphere.core.navigator.solutionsCategory&lt;/parentUid&gt;

              &lt;privilege&gt;Global.IBMDataProtection&lt;/privilege&gt;