Custom summary row not updating after form load

I added two custom summary row to the ggc. The custom summary rows are correctly set when the ggc loads. However, when I make a change to a cell in the grid, the custom summary fields are not being updated. Do I have to manually do this or is this supposed to manually auto-calc?

Never mind,
e.TableControl.Table.CurrentRecord.EndEdit(); did the trick!

How would I implement a custom summary if I wanted to multiply the current cell by another cell in the SAME record before calculating up or down; that is, calculate across and then calculate up or down to get the summary? What is I wanted to do some complex multiplication between direct records in the datasource also? I''ve looked at the custom summary class and can''t figure out what you all are doing?