Before the court may accept a child's plea or stipulation of evidence in a proceeding held under this title, the court shall inform the child that if the court accepts the plea or stipulation and the court makes a disposition in accordance with the agreement between the state and the child regarding the disposition of the case, the child may not appeal an order of the court entered under Section 54.03, 54.04, or 54.05, unless:
Tex. Fam. Code § 54.034