Babel without modification in .htaccess

<?php
/**
 * SubDirContextRoute
 * 
 * Format url: www.example.com/??/page01.html
 * 
 * Event: OnHandleRequest
 * 
 **/

if($modx->context->get('key') == "mgr"){
    return true;
}

$sUrl = $_GET['q'];

if(substr($sUrl,2,1)!='/'){
    return true;
}

$sLang = substr($sUrl,0,2);

$oContextSetting = $modx->getObject('modContextSetting',array('key'=>'CultureKey','value'=>$sLang));

if($oContextSetting){
    $sContextKey = $oContextSetting->get('context_key');
    $modx->switchContext($sContextKey);
    $sNewUrl=substr($sUrl,3);
    $_GET['q']=$sNewUrl;
    $_REQUEST['q']=$sNewUrl;
    $modx->log(xPDO::LOG_LEVEL_ERROR,'[SubDirContextRoute] Trovato context della lingua: '.$sContextKey);
}