Code of Civil Procedure Article 485

No appeal may be taken from a ruling issued by a commissioned judge or an assigned judge. Notwithstanding, where such ruling is the kind of ruling from which an appeal may be taken if it were made by the court hearing the case, an objection to such ruling may be raised with the same court.The provisions with regard to appeals from rulings of the same kind shall apply mutatis mutandis to the objection provided in the preceding paragraph.An appeal may be taken from the ruling on an objection made by the court hearing the case in accordance with the provisions of this Part.Where the action is pending in the court of third instance, objections to rulings made by the commissioned judge or assigned judge may be raised with the court of third instance. In cases where an appeal may be taken to the court of third instance, objections to rulings made by the commissioned judge or assigned judge of the court of second instance may be raised with the court hearing the case.