Text editor and setTextFormat (need help)

I don't know, maybe the problem is the code that saves the text. I really don't understand why he don't work.

This is the code :

miseajour_btn10.addEventListener(MouseEvent.MOUSE_DOWN, bout_sauver_MouseDown10);

var sauverxml10:Array = new Array();

function bout_sauver_MouseDown10(event:MouseEvent):void

{

var vr:URLVariables = new URLVariables();

vr.action = 'save';

vr.value = txt_references_oryx_fr.htmlText;

var rq:URLRequest = new URLRequest("site_swf_EN/en/references_oryx.php");

rq.method = URLRequestMethod.POST;

rq.data = vr;

sauverxml10.push(new URLLoader());

sauverxml10[sauverxml10.length-1].dataFormat = URLLoaderDataFormat.TEXT;

sauverxml10[sauverxml10.length-1].addEventListener(Event.COMPLETE, bout_sauver_Load_OK);

sauverxml10[sauverxml10.length-1].addEventListener(SecurityErrorEvent.SECURITY_ERROR, securityErrorHandler);

sauverxml10[sauverxml10.length-1].addEventListener(HTTPStatusEvent.HTTP_STATUS, httpStatusHandler);

sauverxml10[sauverxml10.length-1].addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler);

try

{

sauverxml10[sauverxml10.length-1].load(rq);

texte_statut.text = "sauvegarde en cours";

}

catch (error:Error)

{

texte_statut.text = "sauvegarde impossible";

}

}

function bout_sauver_Load_OK10(event:Event):void

{

var ld:URLLoader = event.currentTarget as URLLoader;

ld.removeEventListener(Event.COMPLETE, bout_sauver_Load_OK10);

ld.close();

texte_statut.text = "Réponse Php: " + event.target.data;

}