Xml Facade creation doubt

Question

I used the following steps for creating xml facades. However, I am unable to fetch values from the facade and display in jsp. It displays null.
Xml Facade:
1. Create schema with the variables that you want to include in the facade.
2. In the bpel_process.wsdl file, import the schema you just created:
<import namespace="http://www.example.org/facadeSchema"
schemaLocation="facadeSchema.xsd"/>
3.Run schemac utility and include the class files generated in the project so that they can be used in the jsp to fetch values from the facade.
4. Using an assign activity, fetch values (example fname, lname etc) from the process input into the facade.
example:
<assign xmlns="http://schemas.xmlsoap.org/ws/2003/03/business-process/" name="assign-1">
     <copy>
          <from variable="input" part="payload" query="/tns:ProcessRequest/tns:fname"></from>
          <to variable="facadeVar" query="/facade:facadeElem/fname"/>
     </copy>
     <copy>
          <from expression="ora:getInstanceId()"></from>
          <to variable="facadeVar" query="/facade:facadeElem/bpelId"/>
     </copy>
</assign>
5.attach this facadeElem (element created in the schema imported) to the atachment in the task (assign statement)
6. on the jsp side, use the createFacade method(as described in chap 4) ... where you would like to display the values from the facade.
However, maybe I am missing out on a step as I am not able to see what I am fetching from the facade. It displays null. Even though the facade variable contains values as seen in the Audit flow for the process instance.
Any say?

Answer 1

This works fine now. Used schemac utility again (and used those classfiles on the jsp side).