N.Y. Jud. Law § 420

§ 420. Form of objection or denial. If the defendant object to the\nsufficiency of the impeachment, the objection must be in writing, but\nneed not be in any specific form; it being sufficient, if it present\nintelligibly the grounds of the objection. If he deny the truth of the\nimpeachment, the denial may be oral, and without oath, and must be\nentered upon the minutes.\n