add_filter('site-reviews/review-form/fields', function ($fields) {
    if (464591 == glsr_get($fields, 'form.value')) {
        if ('textarea' === glsr_get($fields, 'content.type')) {
            $fields = glsr_set($fields, 'content.minlength', 15);
        }
        if ('text' === glsr_get($fields, 'title.type')) {
            $fields = glsr_set($fields, 'title.minlength', 10);
        }
    }
    return $fields;
}, 20);