Flex AdvancedDatagrid inline commentary functionality required

I'm using Flex's Advanced Datagrid for a project and need inline comments, in a similar style to Excel spreadsheet commen开发者_C百科ts.

A little visual indicator should indicate if a field is associated with a comment, and on clicking on the element should open or trigger an action for displaying that particular comment.

Any suggestions on how I would go about implementing this?

Check out the ToolTipManager class and its usage