title: Using a QLPreviewController/UIWebView to preview Word documents which have merge fields
body: <p>We are currently working on an iPad application which will have the following functionality:</p>
  
  <ul>
  <li>User provides credentials, logs in.</li>
  <li>Set of tasks are retrieved via a web service, which contain base64 encoded documents of varying formats. (.doc, .docx, .rtf etc.)</li>
  <li>The document titles are displayed in a popover list.</li>
  <li>When a document is selected, it is pushed out to a control to render and display it.</li>
  </ul>
  
  <p>Our problem begins when we attempt to push out Word documents which contain bound document properties (merge fields) - the data is not being shown, leaving us with documents which contain for example "Address Line 1, Address Line 2, Postcode", as opposed to the actual values.</p>
  
  <p>Supporting merge fields is a fairly high priority business case for us, so it's important that we get this working if possible.</p>
  
  <p>So far, we've tried using both a QLPreviewController and a UIWebView to render the documents, and the behaviour seems to be the same with both controls.</p>
  
  <p>Has anyone experienced this issue before, and if so how did you work around it?</p>