docs: public int setFieldState(Object objValue, boolean bDisplayOption, int iMoveMode)
      {
          if (this.getScreenField().getConverter() == null)
              return DBConstants.NORMAL_RETURN;
          if (!(objValue instanceof String))
              return this.getScreenField().getConverter().setData(objValue, bDisplayOption, iMoveMode);
          else
              return this.getScreenField().getConverter().setString((String)objValue, bDisplayOption, iMoveMode);
      }