title: How to check for Is Not Null in VBA?
body: <p>Hi I have the following expression. I'm trying to say "if the second field Is Not Null". Can you help.</p>
  
  <p>Thanks</p>
  
  <pre><code>=Iif((Fields!approved.Value = "N" &amp; Fields!W_O_Count.Value IsNotNull), "Red", "Transparent")
  </code></pre>