ByteArray to FileReference

I know I can use this to save ByteArray data to disk:

Actionscript Code:

var ba:ByteArray = new ByteArray;
    ba.writeUTFBytes('<?xml version="1.0" encoding="iso-8859-1"?>\n'+text)
    
    var fr:FileReference = new FileReference(ba);
    fr.browse(new Array(new FileFilter("XML (*.xml)", "*.xml;")));
    fr.save( ba, 'ticker.xml' );

...But is it possible to use the upload() method to write the same ByteArray to a server?

Actionscript Code:

var request:URLRequest = new URLRequest("http://www.[domain].com/uploader_script.php") 
        
        fr.upload(request);

Thanks all.

Are you using the AIR framework?

It is a browser-based application using Flash Player.

The FileReference class provides a means to upload and download files between a user's computer and a server. An operating-system dialog box prompts the user to select a file to upload or a location for download. Each FileReference object refers to a single file on the user's disk and has properties that contain information about the file's size, type, name, creation date, modification date, and creator type (Macintosh only).

Note: In Adobe AIR, the File class, which extends the FileReference class, provides more capabilities and has less security restrictions than the FileReference class.