title: Ironpython Spotfire: How to add (Column Names) and (none) in Trellis expression
body: <p>I'm writing an IronPython script within my Spotfire dashboard and I'm facing a problem. Goal of the script is: If a document property is TRUE, show a trellis with panels on column names. If the property is FALSE, do not show a trellis.
  See below the part of the code where I currently get an error, because the way I write &quot;(Column Names)&quot; (and none as well) is incorrect. What is the syntax for this?</p>
  <p><a href="https://i.stack.imgur.com/cXUqN.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/cXUqN.jpg" alt="enter image description here" /></a></p>