Summaries not updating when expression based field changes.

I have an summary row in a ggc.

I have the fllw similar datasource.
item name -- rate -- qty -- (expression column, total).

The expression column is a syncfusion expression field and NOT a dataset expression field.

When I change the rate or qty, the expression column (total) changes, but the summary row is not getting updated.

I tried this and it worked...

e.TableControl.Table.EndEdit(); e.TableControl.Table.InvalidateSummary(); e.TableControl.Table.SummariesDirty = true;