Zend Framework 3 Hydrator

Question

I have this code:

        $settingsModel = new Settings();
        $hydrator = new ReflectionHydrator();
        $incomingData = array('[meta_title]' => 'CMS');
        $datas = $hydrator->hydrate($incomingData, $settingsModel);

When i print $datas i get empty object

Admin\Model\Settings Object
(
)

On top my Controller i have:

use Zend\Hydrator;
use ReflectionClass;
use Zend\Hydrator\Reflection as ReflectionHydrator;

Any advice?