[in4core]

import flash.events.MouseEvent;
import flash.net.FileReference;
 
var finalString = '';
if(tfName.text != '' && tfName.text.length > 1)  finalString = tfName.text + '\n';
if(tfGroup.text != '' ) finalString += tfGroup.text;
 
btnOk.addEventListener(MouseEvent.CLICK , saveIt);
 
function saveIt(e:MouseEvent):void
{
    var saver:FileReference = new FileReference();
    saver.save(finalString , 'file.txt');
}