Flex Not Assigning Data to Variables
protected function btnSubmitUser_clickHandler(event:MouseEvent):void
        {
            username = txtUsername.text;
            password = txtPassword.text;
            serialno = txtSerialNo.text;
            userName.writeUTFBytes(username);
            passWord.writeUTFBytes(password);
            serialNo.writeUTFBytes(serialno);
            EncryptedLocalStore.setItem("Username", userName);
            EncryptedLocalStore.setItem("Password", passWord);
            EncryptedLocalStore.setItem("Serial", serialNo);
            getRepnameByUsernameResult2.addEventListener(ResultEvent.RESULT, onMyResult);
            getRepnameByUsernameResult2.token = repnameService.getRepnameByUsername(username);
        }

        protected function onMyResult(event:ResultEvent):void{
            repServ = getRepnameByUsernameResult2.lastResult as Repname;
            repid = repServ.RepID;
            RepID.writeInt(repid);
            EncryptedLocalStore.setItem("Rep", RepID);
            lblTestRep.text = RepID.toString();
        }

Error #1009: Cannot access a property or method of a null object reference.
at views::SettingsView/onMyResult()[C:UsersJustinAdobe Flash Builder 4.6Rep AwaresrcviewsSettingsView.mxml:62]

repServ = getRepnameByUsernameResult2.lastResult as Repname;

repServ = Repname(getRepnameByUsernameResult2.lastResult);