title: Dynamic xpath for the property creation in wso2 esb
body: <p>My Requirement is that i have to create some property based on xpath based on chaining.</p>
  
  <p>Flow is something like :</p>
  
  <p>1)i am calling service1 and based on that response i am creating the property mediator (svc1_property).
   2)The call is made to service2 and the response fetched from the service2 has a list of values .</p>
  
  <p>3) I need to fetch a node from the response of svc2 based on the xpath using property : svc1_property.</p>
  
  <p>Config is :</p>
  
  <p>expression="fn:concat(&quot;//ImageList[Level='Employee'][ImageCaption='&quot;,$ctx:EmpName,&quot;']/IMG_Large&quot;)"
   scope="default"
   type="STRING"</p>
  
  <p>EmpName is the property created on svc1</p>