New York Consolidated Laws, Mental Hygiene Law - MHY § 82.07 Revocation and amendment of agreement

(a) The decision-maker may revoke all or part of a supported decision-making agreement by notifying the supporters orally or in writing, or by any other act evincing a specific intent to revoke the agreement.  The failure of the decision-maker to notify supporters shall not invalidate the revocation of all or part of the supported decision-making agreement.

(b) A decision-maker may amend a supported decision-making agreement at any time for any reason, subject to the requirements of this section.  The decision-maker shall notify all supporters of any amendment made to the supported decision-making agreement, but the failure to do so shall not invalidate the amendment.