Hello Jacky,
Thank you for writing.
We are currently working on such feature and I hope it will make it for the Q2 2014 release. Here is the feedback item regarding this case, where you can follow its status:
http://feedback.telerik.com/Project/154/Feedback/Details/110385.
I hope you find this information useful.
Regards,
Stefan
Telerik
Check out the Telerik Platform - the only platform that combines a rich set of UI tools with powerful cloud services to develop web, hybrid and native mobile apps.