public static function init($multidataId, $maxSize, $urlAjax, $properties)
 {
     $data = array("size" => 0, "overlySize" => 0, "id" => $multidataId, "max" => $maxSize, "url" => $urlAjax, "properties" => $properties, "values" => null, "errors" => array());
     OutilsMultidataForm::initValues($data);
     return $data;
 }