Haw. Rev. Stat. § 560:2-703: Choice of law as to meaning and effect of governing instrument.

The meaning and legal effect of a governing instrument is determined by the local law of the state selected in the governing instrument, unless the application of that law is contrary to the provisions relating to the elective share described in part 2, the provisions relating to exempt property and allowances described in part 4, the provisions relating to the burden of proof in section 560:3-407, or any other public policy of this State otherwise applicable to the disposition.