title: How to define expression for dynamic drop down list
body: <p>How do I define an expression (or any other alternative method) when I want to select a value from a dynamic drop down list?</p>
  
  <p>ex:
  drop down list has these values:</p>
  
  <pre><code>Plan A (X)
  Plan B (Y)
  Plan C (Z)
  </code></pre>
  
  <p>where, X, Y and Z are all random numbers.</p>
  
  <p>Is there a way where I can define my selection to select the text up to "Plan #" and ignore the "(X)"?</p>