title: Prepopulating a dropdownlist with xml file in pdf
body: <p>I want to make a pdf form that has a dropdownlist filled with data from an external xml file. The xml file is updated every few days. </p>
  
  <p>I want it so that the client can click a button on our application to download the pdf. When it is downloaded (or when the xml file is updated, whichever works best), I would like it so the pdf prepopulates its dropdownlist with the data from the xml file and is then pushed to the client.</p>
  
  <p>The xml has a structure similar to this:</p>
  
  <pre><code>&lt;items&gt;
      &lt;item&gt;
          &lt;display&gt;string displayed in dropdownlist&lt;/display&gt;
          &lt;value&gt;value used in barcode&lt;/value&gt;
      &lt;/item&gt;
      &lt;item&gt;
          &lt;display&gt;Sample data&lt;/display&gt;
          &lt;value&gt;1&lt;/value&gt;
      &lt;/item&gt;
  &lt;/items&gt;
  </code></pre>
  
  <p>So the client would download the pdf file, open it in reader, fill out the form, where the data is put into a pdf417 barcode (so I need the form to retain the extended reader functionality), printed, etc.</p>
  
  <p>I'm currently using LiveCycle Designer to create the form, and a LiveCycle server is not out of the question if that's what's needed.</p>
  
  <p>Is this even possible? How would I do that?</p>