title: Field override for bdh() in pdblp
body: <p>Bloomberg help isn't very helpful for their API. Can anyone please explain how to replace <code>PX_LAST</code> with the dividend adjusted price field. I have attempted the following but have been unsuccessful</p>
  
  <pre><code>import pdblp
  con = pdblp.BCon()
  con.start()
  
  df2 = con.bdh(['NQ1 Index', 'DM1 Index'], ['PX_LAST'],
                '20061227', '20061231', elms=[("periodicityAdjustment", "ACTUAL")])
  </code></pre>