BTW, you can see that the structure of the XML that corresponds to your JSON
is by going to the HTTP Service Editor dialog, after entering the URL for
your service hitting Test, and then going to the Test Results / XML Response
Body tab. You'll let me know if this works for you.
Yes, you can! In the "Actions Editor" dialog, in the "Service Response
Actions" tab, click 3 times on the "+" icon (see screenshot below), and on
each row you can define the control to populate and the expressions to use
to extract the choices from what the service returns.