// add new connection descriptor to global base
mm.connectionRepository().addDescriptor(jcd);
// allow per thread changes of persistent object data
mm.setEnablePerThreadChanges(true);
DescriptorRepository dr = mm.copyOfGlobalRepository();
ClassDescriptor cld = dr.getDescriptorFor(SMAutoNaming.class);
FieldDescriptor field = cld.getAutoIncrementFields()[0];
// set sequence name for persistent object to null
field.setSequenceName(null);
mm.setDescriptor(dr);