Backup to Dated Folder

What rule do I need to setup for doing the following:
I monitor folder/sub-folders for modified files after two weeks.

This I have working now for executing backups into my '_omnigraffle backup' folder, but I want to copy the files to a 'dated' folder, so end-result is dates of when it did the backup. So I would need to dynamically create a dated folder and have all the files/folders from the source dump into that directory.
i.e.

thanks for any assistance!
I monitor folder/sub-folders for modified files after two weeks.

This I have working now for executing backups into my '_omnigraffle backup' folder, but I want to copy the files to a 'dated' folder, so end-result is dates of when it did the backup. So I would need to dynamically create a dated folder and have all the files/folders from the source dump into that directory.
i.e.

thanks for any assistance!