When I am selecting the operator as 'in' in query designer form, Parameter box is becoming invisible. I need to pass a parameter for WorkItem.IterationPath which has got multiple values. Please let me know how to do this.

Hi, You can just make the operator as Equal and make the parameter as multi select in your report designer. In MDX the In and the Equal parameter does not make any difference. HTH, RamPlease vote as helpful or mark as answer, if it helps