>MyTable.Counter1        (integer)
>MyTable.Counter2        (Numeric 4 0)
>
>REPLACE MyTable.Counter1 WITH 1
>REPLACE MyTable.Counter2 WITH 1
>
>DO CASE
>  CASE MyTable.Counter1 = 1          && is unreliable?
>  CASE MyTable.Counter2 = 1          && is unreliable?
>  CASE MyTable.Counter1 > 0 and MyTable.Counter1 < 2          && is reliable?
>  CASE MyTable.Counter2 > 0 and MyTable.Counter2 < 2          && is reliable?
>  OTHERWISE        && just in case   :-)
>ENDCASE

lnCounter = (MyTable.Counter2 / 3) * 3
CASE MyTable.Counter1 = lnCounter  && is unreliable?