[eluser]theprodigy[/eluser]
There are several ways you can do this.
1. If you have the note displayed in your table, and not just a portion of it, you can use javascript to grab the value of the note text from the table and insert it into the textarea before opening the modal.
2. Do an ajax call to your server to get the note values and on successful return of the ajax call, populate the textarea, then open the modal.
Those are the two ways I know to do it.