how it works?
I try but I can not:
like this on Python
transaction..
ScheduleSheetInstance.Create(doc, sheet.Id, schedule.Id, xyz) # crate schedule
unit = schedule.Definition.GetField(0) # or may be GetField(1) ?
sortgroup = ScheduleSortGroupField(unit.FieldId)
sortgroup.ShowBlankLine = 0 # or may be 1
transaction..