title: APEX set value not updating
body: <p>New to APEX. (19)</p>
  
  <p>I have create a Dynamic Action to detect a change to items on and page and when this happens to update both a Last Updated By and Tags* items against the same record.</p>
  
  <ul>
  <li>Only using the Tags item so I can visually see it on the screen.</li>
  </ul>
  
  <p>The Last Updated By working using:- </p>
  
  <pre><code>Action: SET VALUE  
  Set Type: Static Assignment  
  Value: &amp;APP_USER  
  </code></pre>
  
  <p>This works just fine.  However the following to update the Tags items does not update the Tags item:</p>
  
  <pre><code>Action: SET VALUE  
  Set Type: PL/SQL Expression  
  PL/SQL Expression: SYSDATE  
  </code></pre>
  
  <p>It maybe obvious to you as I've said am new to this.</p>
  
  <p><a href="https://i.stack.imgur.com/UN6xf.png" rel="nofollow noreferrer">image1</a>
  <a href="https://i.stack.imgur.com/1kbHY.png" rel="nofollow noreferrer">image2</a>
  <a href="https://i.stack.imgur.com/dermx.png" rel="nofollow noreferrer">image3</a></p>
  
  <p>Additional notes:</p>
  
  <ol>
  <li>The obvious difference between the two methods is Statis vs. a PL/SQL expression assignment.</li>
  <li>The Tags is getting overridden by something, jst not the required SYSDATE.  IF there was a value in it before the update or I type into it before the update that is cleared out and it is left blank.</li>
  </ol>
  
  <p>Maybe this is of assistance.</p>