flex gooogle code as3xls导出数据到excel

	var ex:ExcelFile=new ExcelFile();
				var arr:ArrayCollection=new ArrayCollection();
				var sheet:Sheet=new Sheet();
				 sheet.resize(10,10);
				for(var i:int=0;i<10;i++){
					 
					
					 sheet.setCell(i,i,i);
					 
					 trace(ex.sheets);
					
				}
				 ex.sheets.addItem(sheet);
				var file:File=File.desktopDirectory.resolvePath("test.xls");
				var fs:FileStream=new FileStream();
				fs.open(file,FileMode.WRITE);
				fs.writeBytes(ex.saveToByteArray());
				fs.close();