actionscript 3 - Writing in txt file on AS3 - 1120: Access of undefined property FileMode -

i trying write in .txt file using as3, unfortunately can't compile code. followed several tutorials , couldn't fix problem. if it's possible me.

import flash.events.mouseevent; import flash.net.urlloader; import flash.filesystem.file; import flash.net.urlrequest; import flash.filesystem.filestream;  stop();  mybutton.addeventlistener(mouseevent.click, loadcomplete);  function  loadcomplete(event:mouseevent):void {     var file:file = file("test.txt")     var stream:filestream = new filestream();     //stream.open(file, filemode.write);     stream.open(file,filemode.write);     stream.writeutfbytes("this text file.");     stream.close();   } 

the error receiving "1120: access of undefined property filemode.". sorry bad english.

the error shown because doesn't import filemode class.

import flash.filesystem.filemode; 

note : adobe air version supports `file, in knowledge.

1. if want write test.txt file without prompt

var file:file = file.desktopdirectory.resolvepath("test.txt"); var  stream:filestream = new filestream();      stream.open(file,filemode.write); stream.writeutfbytes("this  text file."); stream.close(); 

2. if want write prompt

import flash.filesystem.*; import flash.events.event;  var docsdir:file = file.documentsdirectory; function loadcomplete(event:mouseevent):void {   try {       docsdir.browseforsave("save as");       docsdir.addeventlistener(event.select, savedata);   } catch (error:error) {       trace("failed:", error.message);   } }  function savedata(event:event):void {   var newfile:file = event.target file;   var str:string = "hello.";   if (! newfile.exists) {       var stream:filestream = new filestream();       stream.open(newfile, filemode.write);       stream.writeutfbytes(str);       stream.close();   } } 

reference