Haw. Rev. Stat. § 101-19: Amendments of complaints, citations.

In all proceedings under this part the court shall have power at any stage of the proceeding to allow amendments in form or substance in any complaint, citation, summons, process, answer, motion, order, verdict, judgment, or other proceeding, including amendment in the description of the lands sought to be condemned, whenever the amendment will not impair the substantial rights of any party in interest.