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
default :
			{
				parameterBean.setRequired( paramValueObj == null );
				break;
			}
		}
		
		ScalarParameterHandle parameterHandle = (ScalarParameterHandle) attrBean
				.findParameter( parameter.getName( ) );
		Map configMap = attrBean.getParameters( );
		if ( configMap != null && configMap.containsKey( parameter.getName( ) ) )
		{
			Object configObj = configMap.get( parameter.getName( ) );
			if ( configObj != null )
			{
				parameterValue = ParameterValidationUtil
						.getDisplayValue( parameterHandle.getDataType( ),
								parameterHandle.getPattern( ), configObj,
								attrBean.getLocale( ) );
			}
		}
		parameterBean.setValue( ParameterAccessor.getReportParameter( request,
				parameter.getName( ), parameterValue ) );
	}
	protected void prepareParameterBean( HttpServletRequest request,
			IViewerReportService service, ScalarParameterBean parameterBean,
			Locale locale ) throws ReportServiceException
	{
	}
}