I am having a problem getting the Sort to work correctly on a combobox that is displaying an added column. The ComboBox is using the "DisplayName" column (added column) as the Display field and that works perfectly. It will not sort however.
Sort(
AddColumns(
GroupBy(Holidays,
"Country", "Region", "Year", "Result"),
"DisplayName", Country & If(!IsBlank(Region), " - " & Region)),
"DisplayName", SortOrder.Ascending
)