Sort Cross Table rows and columns by additional fields

We offer our Customers the possibility to define a custom sort order of their data.

This is done by using a numeric sort order field.

The Cross Table Control offers already a lot of options to sort, but is missing the same functionality that tables have. E.g. for the above mentioned numeric sort order, it lacks the possibility to sort by two fields; the numeric sort order first and than by the text field shown in the columns/rows.