title: Check if field value is in a list of strings in SSRS report
body: <p>I'm using SSRS (VS2008) and creating a report of work orders. In the detail line of the report table, I have the following columns (with some fake data)</p>
  
  <pre><code>WONUM  |  A  |  B  | Hours
  ABC123 |  3  |  0  |   3
  SPECIAL|  0  |  6  |   6
  DEF456 |  5  |  0  |   5
  GHI789 |  4  |  0  |   4
  OTHER  |  0  |  2  |   2
  </code></pre>
  
  <p>As you can kind of see, all work orders have a work order number (WONUM) as well as a total # of hours (HOURS). I need to put the hours into either column A or column B based on WONUM. I have a list of specifically named work orders (in the example, they would be "SPECIAL" and "OTHER") which would cause the HOURS value to be put in column B. If the WONUM is NOT a  special named one, then it goes in column A. Here's what I WANTED to put as the expression for column A and column B:  </p>
  
  <pre><code>Column A: =IIF(Fields!WONUM.Value IN ("SPECIAL","OTHER"), 0, Fields!Hours.Value)
  Column B: =IIF(Fields!WONUM.Value IN ("SPECIAL","OTHER"), Fields!Hours.Value, 0)
  </code></pre>
  
  <p>But as you're probably aware, <code>Fields!WONUM.Value IN ("SPECIAL","OTHER")</code> is not a valid method of doing this! What is the best way to make this work? I cannot flag it in the SQL query in any other way for other reasons so it must be done in the table.</p>
  
  <p>Thanks in advance for any and all help!</p>