public String getLastSheetName()
	{
		String sheetname = this.sheetname;    // 20100217 KSC: default to 1st sheet
		if( parent_rec != null )
		{
			WorkBook wb = parent_rec.getWorkBook();
			if( (wb != null) && (wb.getExternSheet() != null) )
			{
				String[] sheets = wb.getExternSheet().getBoundSheetNames( ixti );
				if( (sheets != null) && (sheets.length > 0) )
				{
					sheetname = sheets[sheets.length - 1];
				}
			}
		}
		return sheetname;
	}