title: how to using IN operator in ssrs expression
body: <p>First of all sorry about my english. 
  I want to use in ssrs  in tablix-fields expresion something like this:</p>
  
  <pre><code>=iif(CStr(Fields!Id.Value) in Split(Parameters!IdListStr.Value, ","), Fields!Sum, "")
  </code></pre>
  
  <p>where Parameters!IdListStr.Value = "1,2,3".</p>
  
  <p>is it possible?</p>