Dropdown List binding from web-service storing the reference not the value

Question

Hi,
In my human task form, I have a dropdown field who's value list has to be derived from a web-service exposing a table holding the list of values.
It works perfectly fine for the end-user, as in when a user selects a value, say 'XYZ' in step-1 the next user in step-2 is able to see the value as 'XYZ'.
However, when I check the payload of the the composite instance in enterprise manager after the instance has left step-1, I do not see the value 'XYZ' in the payload XML; instead I see a string oracle.jbo.Key[2 0 ]. It seems like BPM is storing some sort of a reference to that value that it resolves at run-time thus displaying 'XYZ'. As the user changes the value from the list, the array seem to be changing like [3 0],[1 0],etc.
Is this how it is expected to behave ? Doesn't seem to be right to me as for all other fields it promptly stores the actual value in the payload and not any sort of reference
Here's what I did:
1. Added a Data Control of type web-service and provided the wsdl link for the same. The wizard asks for the operations which in my case is a simple 'select'
2. From the data control corresponding to the human-task data model, I dragged the field and selected Single Choice>ADF Select One Choice control
3. Edit binding page opens where the data-control of the web-service is enabled and has the option for providing the input for the web-service
4. Click ok and the next screen displays 'edit list binding' for the field dragged from the human task payload. Here I add the data control's output object (iterator). Then I provide the data mapping where I define the ID field identifying the value user would select. The display attribute has description of the id.
Regards,
Sudripta
Edited by: Sudripta on Apr 2, 2013 8:44 PM

Answer 1

Try this -
http://adfwithejb.blogspot.com/2012/03/how-to-programmatically-create-select.html