protected function validateDimensionProduct()
    {
        $fields = array(
            'width' => $this->translation->text('Width'),
            'height' => $this->translation->text('Height'),
            'length' => $this->translation->text('Length'),
            'weight' => $this->translation->text('Weight')
        );

        $errors = 0;
        foreach ($fields as $field => $label) {

            $value = $this->getSubmitted($field);

            if (!isset($value)) {
                continue;
            }

            if (!is_numeric($value)) {
                $errors++;
                $this->setErrorNumeric($field, $label);
            }

            if (strlen($value) > 10) {
                $errors++;
                $this->setErrorLengthRange($field, $label, 0, 10);
            }
        }

        return empty($errors);
    }