N.Y. Est. Powers & Trusts Law § 10-8.2

§ 10-8.2 Rule against perpetuities; law which determines permissible\n period\n In all cases covered by 10-8.1, the permissible period of the rule\nagainst perpetuities is determined by the law in effect when the power\nis exercised or the unqualified power to revoke is terminated, and not\nby the law in effect when the power was created.\n