The syntax used for response elements is XPath syntax. The logic below can be applied to all the response elements, but this particular example will continue using the "login" method as an example. The format of the loginResponse in XML format is:

<loginResponse>
    <cons_id></cons_id>
    <timestamp></timestamp>
    <signature></signature>
    <token></token>
</loginResponse>


Since cons_id is a child element of loginResponse, the full XPath to the cons_id parameter is loginResponse/cons_id. The element in the success_redirect in this scenario would need to be ${loginResponse/cons_id}.