Volumes of revolution

Hi Daniel, regarding your Geogebra Volumes of Revolution:

http://www.geogebratube.org/material/show/id/18475
Is there any way to add additional functions to graph with the current ones?
Thank You

Do you want this kind of features?
https://www.youtube.com/watch?feature=player_detailpage&v=a0r6TQk0PZw