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;
    }