token retrieved but GetAccessTokenEvent empty #8

private function addAccount_mouseDownHandler(event:MouseEvent):void
        {
            var stageWebView:StageWebView = new StageWebView(true);
            stageWebView.stage = stage;
            stageWebView.viewPort = new Rectangle(0, 0, 500, 500);
            var oauth2:OAuth2 = new OAuth2("https://accounts.google.com/o/oauth2/auth",
                    "https://accounts.google.com/o/oauth2/token", LogSetupLevel.ALL);
            var grant:IGrantType = new AuthorizationCodeGrant(stageWebView,                     // the StageWebView object for which to display the user consent screen
                    "1005094869546-eso7913kn7uc0s39ha343c3e7460baek.apps.googleusercontent.com",          // your client ID
                    "tcAPaOZj16HcbG5eEQlLKwYX",      // your client secret
                    "http://localhost",       // your redirect URI
                    "email profile",              // (optional) your scope
                    "");             // (optional) your state

            oauth2.addEventListener(GetAccessTokenEvent.TYPE, onGetAccessToken);

            oauth2.getAccessToken(grant);

        }

        function onGetAccessToken(getAccessTokenEvent:GetAccessTokenEvent):void
        {
            if (getAccessTokenEvent.errorCode == null && getAccessTokenEvent.errorMessage == null)
            {
                // success!
                trace("Your access token value is: " + getAccessTokenEvent.accessToken);
            }
            else
            {
                // fail :(
            }
        } 

                    {
                        var response:Object = com.adobe.serialization.json.JSON.decode(event.target.data);
                        log.debug("Access token: " + response.access_token);
                        var getAccessTokenEvent2 = new GetAccessTokenEvent();
                        getAccessTokenEvent2.parseAccessTokenResponse(response);
                    }  // try statement
                    catch (error:JSONParseError)
                    {
                        getAccessTokenEvent2.errorCode = "com.adobe.serialization.json.JSONParseError";
                        getAccessTokenEvent2.errorMessage = "Error parsing output from access token response";
                    }  // catch statement

                    dispatchEvent(getAccessTokenEvent2);