title: Conditional display of form fields in PloneFormGen
body: <p>Plone 4.3.3</p>
  
  <p>PloneFormGen 1.7.16</p>
  
  <p>I would like to display or hide a set of fields based on the user's selection from a Selection field. The Fieldset Begin and Fieldset End elements do not answer this, so I am left with an Overrides Enabling Expression for each field. What is the TALES incantation for testing the current value of a form field? Will PloneFormGen dynamically test so that the fields are shown/hidden upon the user changing the selection?</p>
  
  <p>Thank you,</p>
  
  <p>Chuck</p>