NetIQ IDM - How to read String type data from Query nodeset done from command transformation

Suppose  query nodeset:

 <do-set-local-variable name="local.sub.etp.q.User" scope="policy">  

   <arg-node-set>  

    <token-query class-name="User" scope="entry">  

    <arg-match-attr name="CN">  

     <arg-value type="string">  

     <token-src-attr class-name="User" name="CN"/>  

     </arg-value>  

    </arg-match-attr>  

    </token-query>  

   </arg-node-set>  

   </do-set-local-variable>  

Output:

 <nds dtdversion="3.0">  
  <source>  
   <product build="20180222_0635" version="1.0.0.2">Identity Manager REST Driver</product>  
   <contact>NetIQ Corporation.</contact>  
  </source>  
  <output>  
   <status event-id="0" level="success" type="driver-general">  
    <operation-data prop.pub.itp.matached="true" prop.pub.itp.matached.target.DN=""/>  
   </status>  
   <instance class-name="users" event-id="0" src-dn="DC7F364B172747698A7685CE9CD705C3">  
    <association state="associated">DC7F364B172747698A7685CE9CD705C3</association>  
    <attr attr-name="Object Class">  
     <value value="string">users</value>  
    </attr>  
    <attr attr-name="name">  
     <value value="string">Dude</value>  
    </attr>  
    <attr attr-name="phone">  
     <value value="string">null</value>  
    </attr>  
    <attr attr-name="count">  
     <value value="string"/>  
    </attr>  
   </instance>  
  </output>  
 </nds>  

Reading phone info:

 <do-set-local-variable name="PhoneInfo" scope="policy">  
   <arg-string>  
    <token-xpath expression="$local.sub.etp.q.User/attr[@attr-name=&apos;phone&apos;]/value&#xd;&#xa;"/>  
   </arg-string>  
   </do-set-local-variable>  
   <do-trace-message>  
   <arg-string>  
    <token-text xml:space="preserve">GOT PHONE INFO => </token-text>  
    <token-local-variable name="PhoneInfo"/>  
   </arg-string>  
   </do-trace-message>