ScrollView not working

I want to add a simple scrollview to a tab. The view for the scrollview is 5000x5000, so I would expect to see the scrollbars. Instead I am getting an error: Uncaught TypeError: Cannot read property ‘$getSize’ of undefined

See code here: http://webix.com/snippet/0582c335

Thanks

Scrollview has to have its own body:

http://webix.com/snippet/c2c12a82

Thanks… I see that in the documentation now.