New notes replace all old notes problem

Hello,
I like the plugin in so far. In my site teachers (editor status) can create new lessons. I implemented dashboard notes to show up in each new lesson. The notes are for the teachers only and I have configured Dashboard notes to only display to those with an editor status. However, I want them to have the ability to create new notes for each lesson. When they make a new note, all previous notes change to the current one.

Any one else have this issue?

Thanks,
Henry

http://ww.wp.xz.cn/plugins/dashboard-notepad/