Unable to create logic in IDT

Hi ,

Im trying to create a measure variable with below logic in IDT

Weighted Sales Volume= if [Object status] =('lost','Closed') then 0 Else ([Expected sales Volume] * ([Probability]/100))

where [Expected Sales volume],

[Object status],

([Probability] are measure objects.

Even tried to use the case condition but it throws error.

Universe is developed on top of Infosets by connecting SAP CRM.

Please suggest.

Thanks ,

Sudhir.