How to specify URL parameters in itemset action?

What is the correct way to specify actions in an "itemset".

for example, in the following, how do you put the book id as the URI
parameter in the actoin: 

<selectOne selectUI="menu">
  <itemset nodeset="books/book" >
    <caption ref="name" />
    <value ref="id" />
    <action>
       <loadURI href="http://host/borrow.asp?book_id=????" /> 
    </action>
  </itemset>
</selectOne>


More specifically, I would like the above expanded into something like the
following: 

<selectOne selectUI="menu">
  <choices>
     <item>
        <caption>book_title_1</caption>
        <value>book1</value>
	  <action>
           <loadURI href="http://host/borrow.asp?book_id=book1" />
        </action>
     </item>
     <item>
        <caption>book_title_2</caption>
        <value>book2</value>
	  <action>
           <loadURI href="http://host/borrow.asp?book_id=book2" />
        </action>
     </item>
   </choices>
</selectOne>


- Eric

Received on Tuesday, 18 December 2001 20:11:52 UTC