více latte helperu v base presenteru

Zdravím mám více helperu v BasePresenteru ale vždy funguje jen ten poslední. Co mám špatně? :)

protected function createTemplate($class = NULL) {
     $template = parent::createTemplate($class);

     $template->registerHelper('grade', function ($s) {
         if (strpos($s, 'Neotestovaná') !== false) {
             return "consumer";
         } elseif (strpos($s, 'Zakázaná') !== false) {
             return "restricted";
         } elseif (strpos($s, 'Armádní') !== false) {
             return "spec";
         } elseif (strpos($s, 'Prověřená') !== false) {
             return "industrial";
         } elseif (strpos($s, 'Základní třída') !== false) {
             return "consumer";
         } else {
             return "classified";
         }
     });

     $template->registerHelper('grade_eng', function ($s) {
         if (strpos($s, 'Consumer') !== false) {
             return "consumer";
         } elseif (strpos($s, 'Restricted') !== false) {
             return "restricted";
         } elseif (strpos($s, 'Mil-Spec') !== false) {
             return "spec";
         } elseif (strpos($s, 'Industrial') !== false) {
             return "industrial";
         } elseif (strpos($s, 'Consumer') !== false) {
             return "consumer";
         } else {
             return "classified";
         }
     });

     //Funkce na časy 1 day ago... atd..
     function nicetime($date) {
         if (empty($date)) {
             return "No date provided";
         }

         $periods = array("second", "minute", "hour", "day", "week", "month", "year", "decade");
         $lengths = array("60", "60", "24", "7", "4.35", "12", "10");

         $now = time();
         $unix_date = strtotime($date);

         // check validity of date
         if (empty($unix_date)) {
             return "Bad date";
         }

         // is it future date or past date
         if ($now > $unix_date) {
             $difference = $now - $unix_date;
             $tense = "ago";
         } else {
             $difference = $unix_date - $now;
             $tense = "from now";
         }

         for ($j = 0; $difference >= $lengths[$j] && $j < count($lengths) - 1; $j++) {
             $difference /= $lengths[$j];
         }

         $difference = round($difference);

         if ($difference != 1) {
             $periods[$j].= "s";
         }

         return "$difference $periods[$j] {$tense}";
     }

     $template->registerHelper('time_ago', function ($a) {
         return nicetime($a);
     });
     return $template;
 }