Integrating APEX application through Rich Content Container

@WipEntityId}

 Rich content container has been created through personalization.

Rich content container has following setup:
- Content type: OTHER
- Destination Function: <function_name>
- Height: 500
- Parameters: accessorClass=oracle.apps.xxea.workorder.webui.XxRCCAccessor&WipEntityId={@WipEntityId} 
- View Instance : WorkOrderDetailsVO
- Width: 800
Function <function_name> has parameters:
- Type: SSWA jsp function 
- HTML call: GWY.jsp?targetAppType=CUSTOM

Accessor Class (oracle.apps.xxea.workorder.webui.XxRCCAccessor) is custom java class, successfully compiled and deployed to /JAVA_TOP/
MakeAccessURL looks like this:
public String makeAccessURL(WebAppsContext webAppsContext, Map map) {
   String wipEntityId = "";
   if(map != null){
        Set params2 = map.entrySet();
        Iterator it = params2.iterator();
       while(it.hasNext()){
                    Map.Entry e = (Map.Entry)it.next();