for example it like to group the columns 5-15.
With excel.Worksheets.Cells.GroupColumns(5, 15); everything works for me.
But the Groupingsymbol ("+") at the top of the page is above the column 15.
I've got a customner who like to have the symbol above column 5.
It tried to turn around the parameters (excel.Worksheets.Cells.GroupColumns(15, 5);) but it won't work for me!
Is it it possible to change the direction of grouping? In Excel I could group the cells this way!