title: How can I get the externalname of a column using IronPython in Spotfire?
body: <p>Currently I need to change the name of a column depending on specific criteria but to do that I'd like to refer to that column by its ExternalName rather than its name.</p>
  
  <pre><code>aColumn = Document.ActiveDataTableReference.Columns["I_id"].Name 
  </code></pre>
  
  <p>unfortunately this doesn't work.</p>
  
  <pre><code>aColumn = Document.ActiveDataTableReference.Columns["I_id"].ExternalName 
  </code></pre>