Using BPEL console testing with XML attributes

Question

I'm having trouble with using an XML attribute in my BPEL process. When I put an attribute on my input element, the BPEL Console test page no longer works. Here's what I'm doing:
I create a synchronous new BPEL project in JDeveloper using the default input and output XSDs, and add a simple assign to assign the input to the output. When I deploy this and look at it in BPEL console, I can see the input field and enter my value to test.
Now I go back into JDeveloper and add an attribute to the input element, and then redeploy my process. Now when I go into BPEL console, the Initiate tab no longer has any field for me to enter my value. Clicking the XML Source radio button doesn't help either. (I also tried invoking the BPEL process web service through the app server control - same issue.)
I'm using JDeveloper 10.1.3.3 with App Server 10.1.3.3.0. Does anyone know how to make the BPEL Console testing work with XSDs that contain attributes?
Thanks,
Skip

Answer 1

A bit more info on this. It doesn't appear that the problem is limited to the console tester. I created another BPEL process which calls my original process, and attempted to set the attribute on the input using the Assign activity. JDeveloper generated this:
<assign name="Assign_1">
<copy>
<from variable="inputVariable" part="payload"
query="/client:TestAttributes2ProcessRequest/client:input"/>
<to variable="Invoke_1_process_InputVariable" part="payload"
query="/ns1:TestAttributesProcessRequest/ns1:input"/>
</copy>
<copy>
<from expression="'bob'"/>
<to variable="Invoke_1_process_InputVariable" part="payload"
query="/ns1:TestAttributesProcessRequest/ns1:input/@attribute1"/>
</copy>
</assign>
As you can see this is mapping a variable into the /TestAttributesProcessRequest/input element and then attempting to set the attribute of that element to the value 'bob'. This compiles just fine but when this code is executed, this error occurs:
Error in <assign> expression: <to> value is empty at line "87". The XPath expression : "" returns zero node, when applied to document shown below:
oracle.xml.parser.v2.XMLElement@7efe7efe
(Line 87 is query="/ns1:TestAttributesProcessRequest/ns1:input/@attribute1"/>)
Is there something wrong with this generated code? Do I need to do some kind of custom code to set attributes, instead of using the graphical tools in JDeveloper?