public function decodeValue(DecodePropertyValueForWidgetEvent $event)
    {
        if (!$this->wantToHandle($event)) {
            return;
        }

        $metaModel = $this->getMetaModelFromModel($event->getModel());

        $values = Helper::decodeLangArray($event->getValue(), $metaModel);

        $event->setValue(unserialize($values));
    }