public function setMultiSrcFlags($value, DataContainer $dataContainer)
    {
        if ($dataContainer->activeRecord && $dataContainer->activeRecord->type === 'bs_grid_gallery') {
            $fieldsDca =& $GLOBALS['TL_DCA'][$dataContainer->table]['fields'][$dataContainer->field]['eval'];

            $fieldsDca['isGallery']  = true;
            $fieldsDca['extensions'] = Config::get('validImageTypes');
        }

        return $value;
    }