Hi,
I'm afraid you can't. However, you can set a Flag field (EG Flga1) to Yes
and set up a bar style to show a different format for Flag1 fields. With 20
Flag fields you can then show 20 different bars (though distinguishing
between colors for more than 5 becomes hard!).
--
Rod Gill
Microsoft MVP for Project
Author of the only book on Project VBA, see:
http://www.projectvbabook.com