Tracking modification of single field

[Triple]

I have a field that when modified I would like the db to show the name and date of the person who modified the field. I can't seem to figure out how to get this to work properly. Any help would be appreciated.

Thanks

[comment]

See:

http://fmforums.com/forum/showtopic.php?tid/196160/post/294445/#294445

[Triple]

This worked perfectly, thanks for the hand up!