Nothing.

from this context, A function can do nothing more than returning a value to
the cell in which it is located - just like the built in functions.

You could possibly have each function update a defined name or public
variable or something and then use the calculate event to access that list
and color the cells.

--
Regards,
Tom Ogilvy

"James Cornthwaite" wrote in message
...
I have written the macro as below



Function FindOldNominal(NomCode, Range)

FindOldNominal = WorksheetFunction.VLookup(NomCode, Range,5,false)
End Function


My question is what code can I insert that will change the colour (say) of
the cell accessed by this function.
My aim is to show all the cells accessed (and contents returned) by
changing
their colour so I know which cells in my table have not yet been looked
at.

Thanks
James