public Area3DPtg(String arearef, int externIdx) {super(new AreaReference(arearef, SpreadsheetVersion.EXCEL97));setExternSheetIndex(externIdx);}

public Area3DPtg ( String arearef , int externIdx ) { super ( new AreaReference ( arearef , SpreadsheetVersion . EXCEL97 ) ) ; setExternSheetIndex ( externIdx ) ; }
public Area3DPtg(String arearef, int externIdx):base(arearef){ExternSheetIndex=externIdx;}
