title: Drupal 7 Rules Module & PHP Evaluation "add a variable"
body: <p>I'm trying to add a variable within an action of Rules Module of Drupal 7 , and I want to calculate the initial default value of that variable using PHP Evaluation input , But the problem is that I always get an empty value.</p>
  
  <p>I left the Data selector zone empty and written in the PHP Evaluation zone this code:</p>
  
  <p><em>return 4;</em></p>
  
  <p>Could you please tell me why do I get always an empty value? and how to retrieve the result of PHP Evaluation input?</p>
  
  <p>EDIT :
  <a href="http://postimg.org/image/ff2rk3pnb/" rel="nofollow">Screenshot</a></p>