Montana Title 46. Criminal Procedure § 46-20-104. Scope of appeal by defendant

(1) An appeal may be taken by the defendant only from a final judgment of conviction and orders after judgment which affect the substantial rights of the defendant.

(2) Upon appeal from a judgment, the court may review the verdict or decision and any alleged error objected to which involves the merits or necessarily affects the judgment. Failure to make a timely objection during trial constitutes a waiver of the objection except as provided in 46-20-701(2).