title: How to display all tablix columns, including zero
body: <p>I am developing an SSRS 2008 tablix.  The problem that I have though is that I need to display all 12 months of the year.  Currently, it only displays columns with values > 0.  Even though I entered this expression for that field:</p>
  
  <pre><code>=IIF(Sum(Fields!NumActionPlanRemainOverdue.Value)=0, 0, Sum(Fields!NumActionPlanRemainOverdue.Value))
  </code></pre>
  
  <p>What else can I do?</p>