Send Query Parameter to Menu Component

<% RenderingContext context = (RenderingCon text)request.getAttribute(Workspace.WCM_RENDERINGCONTEXT_KEY);

String currentPath = context.getPath();

String currentLibrary = context.getLibrary().getName();

Map myparams = new HashMap();

myparams.put("SiteAreas", currentLibrary+"/mySite/mySiteArea1,"+currentLibrary+"/mySite/mySiteArea2"); %>

Another Way of doing is

<%RenderingContext context = (RenderingContext)request.getAttribute(Workspace.WCM_RENDERINGCONTEXT_KEY); %>

<% String currentPath = context.getPath(); //Getting the library relative path(Ex : /Library/Site/Sitearea/Content)

String lrp=context.getLibraryRelativePath();

String sublrp=lrp.substring(0,lrp.lastIndexOf("/"));

String currentLibrary =context.getLibrary().getName();

Map myparams=context.getRequestParameters();

myparams.put("sitearea", currentLibrary+sublrp); context.setRequestParameters(myparams); %>

//Rendering the menu

<wcm:libraryComponent name="menu" library=currrentLibrary />