title: Crystal Report SUM function with CASE
body: <p>I have the following column values in my crystal report:</p>
  
  <pre><code>|Code |Unit |
  |A    |2    |
  |B    |3    |
  |C    |2    |
  |D    |3    |
  |E    |1    |
  |F    |1    |
  |G    |4    |
  |H    |(3)  |
  </code></pre>
  
  <p>I want to summarize the Unit except the Units which has Code H,J,K, and L.
  The Codes: H,J,K, and L contains units which has parenthesis.
  Is there a way to do this?</p>