1.Where the law chosen by the deceased to govern his succession pursuant to Article 22 is the law of a Member State, the parties concerned may agree that a court or the courts of that Member State are to have exclusive jurisdiction to rule on any succession matter.
2.Such a choice-of-court agreement shall be expressed in writing, dated and signed by the parties concerned. Any communication by electronic means which provides a durable record of the agreement shall be deemed equivalent to writing.