Vaadin charts drilldown not working

Hi
I am using Vaadin charts 3.2 and Vaadin 7.7.6. I'm having trouble making the drilldown happen. I was thinking about attching my code but before writing this post I also tried with the code in the demo (https://demo.vaadin.com/charts/#ColumnWithNativeDrilldown) and that didn't work either, so I'm probably doing something wrong on a whole other level?!? I see no errors in the console log and no errors in the client console. I have tried with both Safari and Chrome. When trying it out on the vaadin demo page it works fine but when I implement it my self, it doesn't work. As I said, I copied the demo code and still weren't able to make the drilldown work. Any idea to what the problem might be?
Thank you!

Regards
Johan