Ranking featured OFF in Webi for Universe (IDT) with Sybase IQ as Reporting DB

Hello Gurus,

I see that the Ranking feature in Webi (Query Panel) is grayed out for a Universe (IDT) with Sybase IQ as Reporting DB. I want to get only Top 10 or less values depending on couple of measures.

Any suggestions?

Thanks,
Mahboob Mohammed