Sets one of the single references in a multiple reference
CXlRef SetRefItem( WORD wItem, const CXlRef& xlr );
The index of the range to retrieve. The first item is at position 0.
A reference to a block of cells.
Sets the value of one of the single ranges in a multiple reference. If the CXlOper contains a single reference, and wItem is 0, then the function will affect the single reference itself.