Bug 146709 Dates still do not work from main report to sub reports...
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/context/ViewerAttributeBean.java
Collection parameterList = getParameterList( );
		
		if ( this.isDesigner
				&& !IBirtConstants.SERVLET_PATH_FRAMESET
						.equalsIgnoreCase( request.getServletPath( ) ) )
			parseConfigVars( request, parameterList );
		
		this.parametersAsString = getParsedParametersAsString( parameterList,
				request, options );
		
		Collection parameterDefList = getReportService( )
				.getParameterDefinitions( this.reportDesignHandle, options,
						false );
		
		if ( documentInUrl )
			this.missingParameter = false;
		else
			this.missingParameter = validateParameters( parameterDefList,
					this.parametersAsString );
		
		this.parametersAsString = getParsedParametersAsStringWithDefaultValue(
				this.parametersAsString, request, options );
		
		this.parameters = (HashMap) getParsedParameters(
				this.reportDesignHandle, parameterList, request, options );
	}
	/**
	 * parse paramenters from config file.
	 *