Can't set public Object in HTTPService result listener

Question

Hello.
I am using a data object class.  The class is based on a class that contains the HTTPService calls.  I want to return the event.results to the local instance of the class by setting a public Object = the results Object. However, the public object is null after the HTTPService event result listener function is finished.
It is easier to see than to describe:
In the main application. i make an instace of my activity class:
myactivity:activity = new activity() ;
now, I invoke the getdata method:
myactivity.getdata() ;
The getdata() method fails at runtime, because it tries to reference the results object.
See the base class and the activity class below.
BASECLASS: (just the main parts are listed here):
public class transferObject
        public var baseurl:String ;
        public var dbresult:Object =new Object();
        public var service:HTTPService ;
        public function transferObject()
        geturl("ghost") ;
        public function geturl(db:String) : void
                baseurl = "https://xyzzy/" ;
        public function getHttpService(methodname:String):void {
                service = new HTTPService();
                service.url = this.baseurl + methodname;
                service.channelSet ;
                service.method = "POST";
                service.addEventListener("result", httpResult );
                service.addEventListener("fault", httpFault);
                service.send();
           public function httpResult(event:ResultEvent):void {
                dbresult = event.result ;
//DBRESULT IS THE OBJECT I WANT TO REFERENCE IN THE DERIVED CLASS
             //Do something with the result.
            public function httpFault(event:FaultEvent):void {
                var faultstring:String = event.fault.faultString;
                Alert.show('Error sending data: '+faultstring+' '+event.fault);
HERE IS THE DERIVED CLASS:
package dataObjects
    public class activity extends transferObject
    import mx.controls.Alert ;   
[Bindable]
public var event_id:String ;
[Bindable]
public var description:String ;
       public function activity()
            super();
        public function getdata():void
            getHttpService("eventually.sendtest") ;
          this.event_id = dbresult.result.activities.activity.getItemAt(0).event_id ;
----> THE LINE ABOVE FAILS AT RUN TIME BECAUSE THE DBRESULT OBJECT IS NULL
THANK YOU FOR ANYHELP YOU CAN PROVIDE

Answer 1

Sorry, but parameters of a ServeletRequest can not be modified. Look at the javadocs on ServeletRequest and you will see that "getParameterMap" returns an immutable Map. JSF is simply wrapping that method call with their own "getRequestMap" method. Setting an attribute, request.setAttribute(name, object), is how you pass things using the request to servlets, jsps, etc. on down the line. Just get the attribute instead of the parameter where you need it. Set your "parameter" in the attributes, down the line, check the attribute first, if it exists, use it, otherwise look for the parameter.