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
if ( group != null )
		{
			if ( group.getParameterCount( ) > params.size( ) )
			{
				int remainingParams = group.getParameterCount( )
						- params.size( );
				for ( int i = 0; i < remainingParams; i++ )
				{
					ParameterDefinition def = (ParameterDefinition) group
							.getParameters( ).get( params.size( ) + i );
					remainingParamNames.add( def.getName( ) );
				}
			}
		}
		
		try
		{
			if ( remainingParamNames.size( ) > 0 )
			{
				listArray = new List[remainingParamNames.size( )];
				for ( int k = 0; k < remainingParamNames.size( ); k++ )
				{
					Object[] keyValue = new Object[params.size( ) + k];
					Set values = params.keySet( );
					int i = 0;
					for ( Iterator it = values.iterator( ); it.hasNext( ); )
					{
						keyValue[i] = params.get( it.next( ) );
						i++;
					}