Do You Want to File a 388 Petition for Modification in Juvenile Dependency Court HOW TO File a 388 Petition to change custody and visitation orders in a juvenile dependency case. WHEN TO USE You want to change a court order in a juvenile dependency court case new or old. You are the parent of the child the dependent child of the juvenile court with a guardian or other person having an interest in the child. Circumstances have changed since the last order was made or there is new evidence you...