code: public int fieldChanged(boolean bDisplayOption, int moveMode)
      {
          boolean flag = !(this.getOwner().getString().equals(m_strDisableOnMatch));
          if (!m_bDisableIfMatch)
              flag = !flag;
          m_listenerToDisable.setEnabledListener(flag);
          return DBConstants.NORMAL_RETURN;
      }
docs: The Field has Changed.
  Enable/disable the target listener if this field now matches the target string.
  @param bDisplayOption If true, display the change.
  @param iMoveMode The type of move being done (init/read/screen).
  @return The error code (or NORMAL_RETURN if okay).