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/service/actionhandler/AbstractGetCascadeParameterActionHandler.java
.getSelectionListForCascadingGroup( design, groupName,
						groupKeys, options );
		if ( list != null && list.size( ) > 0 )
		{
			Iterator iList = list.iterator( );
			int index = 0;
			while ( iList != null && iList.hasNext( ) )
			{
				ParameterSelectionChoice item = (ParameterSelectionChoice) iList
						.next( );
				if ( item != null && item.getValue( ) != null )
				{
					try
					{
						selectionList.add( index++, (String) DataTypeUtil
								.convert( item.getValue( ),
										DataType.STRING_TYPE ) );
					}
					catch ( BirtException e )
					{
						throw new ReportServiceException( e
								.getLocalizedMessage( ) );
					}
				}
			}
		}
		return selectionList;
	}
}