Custom Rewrite Slugs

Hi this seems to be a great basic plugin. However it might be lacking some documentation.

I would like to add the date elements to my Custom Rewrite Slug area for my new Custom Post based on Posts.

I have a permalink structure for posts that use /%year%/%monthnum%/%day%/%postname%/

However when I add those variables to the Custom Rewrite Slug field they are output as literal text.

Using trial and error I was able to get my /sample/category/title-of-item working for the post structure – which would be fie – except i’d like to add the dats as well.

I’m surprised other people haven’t asked for this as well.

thanks.