if ((status == MIDI_CONTROL_CHANGE + attr_midichannel) && (data1 == attr_cc)) {
  PExModulationSourceChange(
      &parent->GetModulationTable()[parent->MODULATOR_attr_name *
                                    NMODULATIONTARGETS],
      NMODULATIONTARGETS, &parent->PExch[0],
      &parent->PExModulationPrevVal[parent->polyIndex]
                                   [parent->MODULATOR_attr_name],
      data2 << 20);
}