Drilldown not working in PowerBI Service

Hello,

I have a Pie chart visual I quite like.  it has five layers of hierarchy.  In PowerBI Desktop, switching on Drill Mode works a treat, clicking on a data point and the visual drills down.

 

I want this to happen once the report is published to the service but I cant get it to work.  I can right click on the visual and go to the next level, but it doesnt retain selections and is not the experience I want. 



How do I fix it so its clickable on the datapoint.  I cant figure it out.

Thanks.