Bug 155493 [Deploy] Pictures and chart pictures are lost when preview on Weblogic Server using WAR deploy
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/service/ReportEngineService.java
IScalarParameterDefn parameterObj = (IScalarParameterDefn) iter
					.next( );
			String paramValue = null;
			Object paramValueObj = null;
			
			
			
			String paramName = parameterObj.getName( );
			String format = parameterObj.getDisplayFormat( );
			
			ReportParameterConverter converter = new ReportParameterConverter(
					format, locale );
			if ( ParameterAccessor.isReportParameterExist( request, paramName ) )
			{
				
				paramValue = ParameterAccessor.getReportParameter( request,
						paramName, paramValue );
				paramValueObj = converter.parse( paramValue, parameterObj
						.getDataType( ) );
			}
			else if ( ParameterAccessor.isDesigner( request )
					&& configVars.containsKey( paramName ) )
			{
				
				String configValue = (String) configVars.get( paramName );
				ReportParameterConverter cfgConverter = new ReportParameterConverter(
						format, Locale.US );
				paramValueObj = cfgConverter.parse( configValue, parameterObj
						.getDataType( ) );
			}