Bug 132914 "Invalid page number" error message is hard coded.
"Invalid page number" error message is hard coded in DocumentProcessor.java. This must be externalized into *.properties file. If there are other hard coded error messages, please also externalize.
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/presentation/aggregation/parameter/ScalarParameterFragment.java
* @param response
	 *            http response
	 * @return target jsp pages
	 * @exception ServletException
	 * @exception IOException
	 */
	protected void doService( HttpServletRequest request,
			HttpServletResponse response ) throws ServletException, IOException
	{
		ViewerAttributeBean attrBean = (ViewerAttributeBean) request
				.getAttribute( "attributeBean" ); 
		assert attrBean != null;
		assert parameter != null;
		ScalarParameterBean parameterBean = new ScalarParameterBean( parameter );
		attrBean.setParameterBean( parameterBean );
		Locale locale = attrBean.getLocale( );
		boolean isDesigner = attrBean.isDesigner( );
		try
		{
			prepareParameterBean( attrBean.getReportDesignHandle( request ),
					getReportService( ), request, parameterBean, parameter,
					locale, isDesigner );
			
			prepareParameterBean( request, getReportService( ), parameterBean,
					locale );
		}
		catch ( ReportServiceException e )
		{
			
			e.printStackTrace( );