embedding elements into exhibits

I am currently working on a class project, a small online collection and exhibit of a medal our university awards annually.

My question is how can I embed an object using the "simple pages" editor. I have tried several times to use the html editor, but the embedded object fails to show. What am I missing? I'm using the correct code to view an embedded object as I have edited it outside of Omeka and it works fine in a web browser.

Thanks

In the admin Security Settings, be sure that the box next to "Enable HTML filtering" is unchecked.