//20100916, henrichen@zkoss.org
private void notifyCellShifting(XSSFCell cell){
String msg = "Cell[rownum="+cell.getRowIndex()+", columnnum="+cell.getColumnIndex()+"] included in a multi-cell array formula. " +
"You cannot change part of an array.";
if(cell.isPartOfArrayFormulaGroup()){
new XSSFCellHelper(cell).notifyArrayFormulaChanging(msg);
}
}