public cfData execute( cfSession _session, List<cfData> parameters ) throws cfmRunTimeException {
	if ( parameters.get(0).getDataType() != cfData.CFSTRUCTDATA )
		throwException(_session, "parameter must be of type structure");
	
	cfSpreadSheetData	spreadsheet	= (cfSpreadSheetData)parameters.get(1);
	cfStructData	s	= (cfStructData)parameters.get(0);
	
	Workbook	workbook	= spreadsheet.getWorkBook();
	
	/*
	 * XSSFWorkbook
	 */
	if ( workbook instanceof XSSFWorkbook ){
		XSSFWorkbook xSSFWorkbook = (XSSFWorkbook)workbook;
		
		CoreProperties cP = xSSFWorkbook.getProperties().getCoreProperties();
		
		if ( s.containsKey("author") )
			cP.setCreator( s.getData("author").getString() );
		if ( s.containsKey("category") )
			cP.setCategory( s.getData("category").getString() );
		if ( s.containsKey("subject") )
			cP.setSubjectProperty( s.getData("subject").getString() );
		if ( s.containsKey("title") )
			cP.setTitle( s.getData("title").getString() );
		if ( s.containsKey("revision") )
			cP.setRevision( s.getData("revision").getString() );
		if ( s.containsKey("description") )
			cP.setDescription( s.getData("description").getString() );
		 		
	}else{
		HSSFWorkbook hSSFWorkbook = (HSSFWorkbook)workbook;
		DocumentSummaryInformation dSummary = hSSFWorkbook.getDocumentSummaryInformation();
		
		if ( dSummary == null ){
			hSSFWorkbook.createInformationProperties();
			dSummary = hSSFWorkbook.getDocumentSummaryInformation();
		}
		
		if ( s.containsKey("category") )
			dSummary.setCategory( s.getData("category").getString() );
		if ( s.containsKey("manager") )
			dSummary.setManager( s.getData("manager").getString() );
		if ( s.containsKey("company") )
			dSummary.setCompany( s.getData("company").getString() );

		SummaryInformation sInformation = hSSFWorkbook.getSummaryInformation();
		
		if ( s.containsKey("title") )
			sInformation.setTitle( s.getData("title").getString() );
		if ( s.containsKey("subject") )
			sInformation.setSubject( s.getData("subject").getString() );
		if ( s.containsKey("author") )
			sInformation.setAuthor( s.getData("author").getString() );
		if ( s.containsKey("comments") )
			sInformation.setComments( s.getData("comments").getString() );
		if ( s.containsKey("keywords") )
			sInformation.setKeywords( s.getData("keywords").getString() );
		if ( s.containsKey("lastauthor") )
			sInformation.setLastAuthor( s.getData("lastauthor").getString() );
	}
	
	return cfBooleanData.TRUE;
}