I found my answer browsing through past threads.
On December 13, 2013, ALex Warhonowicz wrote an answer to Ese Bohrer with the suggested syntax shown below.
I tried thys syntax with my issue and it worked perfectly.
Hey Arnold - if you think that dumb users like me don't appreciate the great help from the outstanding moderators in this forum, you're wrong. Thanks very much.
*WHEN ACCOUNT
*IS A
*REC(EXPRESSION=%VALUE%,ACCOUNT="X")
*IS B
*REC(EXPRESSION=%VALUE%,ACCOUNT="X")
*IS C
*REC(EXPRESSION=%VALUE%,ACCOUNT="X")
*IS D
*REC(EXPRESSION=-%VALUE%,ACCOUNT="X")
*IS E
*REC(EXPRESSION=-%VALUE%,ACCOUNT="X")
*IS F
*REC(EXPRESSION=-%VALUE%,ACCOUNT="X")
*IS G
*REC(EXPRESSION=-%VALUE%,ACCOUNT="X")
*ENDWHEN