title: How show conditional sum using multiple dataset?
body: <p>I need show on my reportviewer the conditional sum getting data of other dataset, because my report show data of multiples dataset.</p>
  
  <p>=Sum(iif(Fields!Id.Value = Parameters!Id.Value, Fields!Jan.Value,""),"Other_DataSet")</p>
  
  <p>This code below works fine. But use default dataset, setted on bind propertie.
  =Sum(iif(Fields!Id.Value = Parameters!Id.Value, Fields!Jan.Value,""))</p>