Enters a US English formula as an array formula in the range specified or in the current selection
static int FormulaArrayIntl( LPCTSTR formula_text, const CXlOper& reference = CXlOper::MissingArg() );
Formula_text is the text you want to enter in the array. The formula should appear as it would in an English version of Excel, using US English regional settings.
Reference specifies where formula_text is to be entered.
Zero if the function has been called successfully; non-zero if the function could not be called. See Error codes for a list of return values.
See the Microsoft Excel on-line Help for full details about this function.