i built a HierarchicalCollectionView in AdvancedDataGrid with grouped rows and sums in the grouped row for letsSay earned money. Zhe childs of the frouped row are 12 rows for each month in a year. of course, each child has a field named earned. a sum of all 12 month are shown in the summary row.
to this point, all works fine.
Now i have to implement a filterFunction to filter out some month. Also this works fine, but the sums are incorrect. so I'm looking for a possibility to recalculate sums after filter some rows out.