title: How can I create a Calculated Column in Spotfire with IronPython script (preferably using External Name)?
body: <p>I have a data table where I can not count on the column names being the same from moment to moment so I cannot build Calculated Columns the standard way because it uses the "Column Name" property (and that can change).</p>
  
  <p>So, I'd like to build them via IronPython using the External Name which won't change without notice.</p>