How to set violation with array

hack.php

<?php

namespace SmaakEnSensatie\Validator;

use Symfony\Component\Validator\Constraint;
use Symfony\Component\Validator\ConstraintValidator;

class DeliveryValidator extends ConstraintValidator
{
    public function validate($value, Constraint $constraint)
    {
        if ($value) {
            $data = $this->context->getRoot()->getData();

            $required = array('deliveryStreet', 'deliveryNumber', 'deliveryZipcode', 'deliveryCity', 'deliveryCountry');
            foreach ($required as $key) {
                if (empty($data[$key])) {
                    $this->hackViolation($key, 'Dit veld is verplicht');
                }
            }
        }
    }

    protected function hackViolation($path, $message)
    {
        $reflection = new \ReflectionObject($this->context);
        $property = $reflection->getProperty('propertyPath');
        $property->setAccessible(true);
        $property->setValue($this->context, 'children['.$path.'].data');
        $this->context->addViolation($message);
    }

}