GROUP SUM with WHERE in REPORT

For this example, assume that all variables are declared correctly and sensibly and that this code exists in an AFTER GROUP clause of a report. I have verified that at the point in time where the GROUP SUM is executed that curr_year = 1995 and that rows with rpt.data_year = 1995 have been passed to the report. for i = 1 to num_years let curr_year = year_array[i] let rpt.sub_line_year = curr_year let turn_rec.begin_tons = (group sum(rpt.begin_tons) where (rpt.data_year = curr_year)) .... end for This code places a null into turn_rec.begin_tons. If I replace the last line with where (rpt.data_year = 1995) I get correct output. Is this a bug or a feature? I can restructure my report to get the behavior I need, but I am curious. John Prideaux alastl@ix.netcom.com