adding perspective chooser not working

Hi All,

i've added perspective chooser "Commerce Search" in our custom backoffice config file in this way.

     <y:perspective-chooser xmlns:y="http://www.hybris.com/cockpitng/config/perspectiveChooser">
         <y:authority name="customersupportmanagerrole">
             <y:perspective id="CustomerSupport-Perspective"/>
              <y:perspective id="commerceSearch"/>
         </y:authority>
     </y:perspective-chooser>
 </context>

but it has not added, please help.