aSession.startOperation()
aFaceFeature2 = aPart.addFeature("Face")
aBaseObjectsList = aFaceFeature2.selectionList("base_objects")
-aBaseObjectsList.append("Cylinder_1_1/Face_1&Cylinder_1_1/Face_2", "EDGE")
+aBaseObjectsList.append("[Cylinder_1_1/Face_1][Cylinder_1_1/Face_2]", "EDGE")
aSession.finishOperation()
assert (len(aFaceFeature2.results()) > 0)