He he, not what youre thinking of.... Hi, can anyone direct me to a piece of information about building cHash parameter I am not managing? I am tryin with $pA = $GLOBALS['TSFE']->cHashParams($paramString); //paramString looks like &par=value&par2=value ... $url.='&cHash='.t3lib_div::shortMD5(serialize($pA)); but do not get it. Thanks Gabriel