formatting using Previous(fld) is affecting first line

[CarolineS]

Hi all,

I'm creating a report in which several item lines may appear for any given invoice payment. Each line must show, but the first item line is the most important.

So if three lines have the same payment number, I'm conditionally formatting the fields' font by saying:
If {pymnt#} = Previous({pymnt#}) then crGray else crBlack.

This is working fine, except for the fact that the first line of the report is also responding to this criteria, and the fields are appearing as gray. Anyone know how to avoid this?

Thanks