Figure in Simple Pages HTML Source Editor

I'm building an organizational chart layout in a simple page like this (

However my figure tag is stripped out when I save the page. I have tried adding figure to my Settings / Security / Allowed HTML Elements and I have also tried un-checking the Enable HTML Filtering checkbox. But the figure is still stripped [pardon my pun!]

Is there somewhere else I can enable use of the figure element?

By the way, I'm using Omeka 2.4

Does it work if you uncheck the HTML editor box, so that you're just entering HTML directly?

My bet would be that it's TinyMCE, the WYSIWYG editor widget, that's stripping those tags.

Yes, thank you John!