i have a form consist of 4 subforms each has a textbox called subtotal (=sum([totcost])
and i have a textbox in the main form which is the grand totals for the 4 subtotals
now the problem if one of the subforms has no records its subtotal box be came clear without any value ( its value not null nor empty i test it by isnull & isempty) and the result that the grand total give error not even the totals of the other subtotals ???