code: 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);
      }
docs: Set the field to this state. State is defined by the component.
  @param objValue The value to set the field to (class of object depends on the control).
  @param bDisplayOption Display the data on the screen if true.
  @param iMoveMode INIT, SCREEN, or READ move mode.
  @return Error code.