[flexcoders] can't find the filereference.save method

[mod]

Hi all,
I've recently been using Flex Builder 3 for ArcGIS API for Flex. and I am 
trying to export data both from a variable or datagrid to a text or csv or 
excel file. I've updated to Flash Player 10 but still method save doesn't show 
in the list after typing dot after filereference.

Here is the sample code-

public var downloadFile:FileReference = new FileReference();
public var csvString:String = "Owner1, Owner2, Owner3\r\n";

private function downloadcsv(csvString:String):void{
                var csvData:String = csvString;
                
                configureListeners(downloadFile);
                downloadFile.    (save method doesn't showup in the list)

//If I use download method the request.url="http://localhost/";; is not 
//working either. I can save the file but its empty
                downloadFile.download(request, "file2.txt");
}

Can anyone suggest quick remedies?
Need to wrap up my application.

Thanks to all!