Telerik editor with RTL behavior

Hi,

I'm trying to set RTL language for the rich editor, using v2.1

The FCKeditor replaced by the Telerik editor and I didn’t success to set the culture for this editor. trying to add .Localizable() to RichEditor.cshtml file didn’t help:
http://demos.telerik.com/aspnet-mvc/razor/editor/localization
How can I set the editor to works with RTL behavior?

http://demos.telerik.com/aspnet-mvc/razor/editor/rtlsupport