svoid dm_longFieldMenuItem(Container frame, fS field, fO... _) {
  final DynModule m = dm_current_mandatory();
  fS humanized = humanizeFormLabel(field);
  internalFramePopupMenuItem(frame/JInternalFrame, humanizeFormLabel(field) + "...", r {
    final JTextField tf = jtextfield(get(m, field));
    showFormTitled(or2(stringOptPar(_, 'formTitle), "Set " + humanized),
      humanized + ":", tf, r {
        m.setField(field, parseLong(gtt(tf)));
        callF(optPar(_, 'onSet));
      });
  });
}

Began life as a copy of #1019106