code: public void setProperty(String strProperty, String strValue)
      {
          if (strValue == null)
              strValue = NULL;
          if (strValue != null)
              m_properties.setProperty(strProperty, strValue);
          else
              m_properties.remove(strProperty);
      }
docs: Set this comand property.
  @param strParam The param name.
  @param strValue The param value.