Trial mode with ApplicationModel.Store.CurrentAppSimulator

Question

I'm using the trial mode example code in my app I'm developing.  I hooked up an event listener for the license changed event as well as have a button with a click event to purchase the app, as in the example code.

app.addEventListener("activated", function (args) {
        if (args.detail.kind === activation.ActivationKind.launch) {
            if (args.detail.previousExecutionState !== activation.ApplicationExecutionState.terminated) {
                // TODO: This application has been newly launched. Initialize
                // your application here.

                //add share listener
                var dataTransferManager = Windows.ApplicationModel.DataTransfer.DataTransferManager.getForCurrentView();
                dataTransferManager.addEventListener("datarequested", dataRequested);

                // Get the license info
                var licenseInformation = currentApp.licenseInformation;

                // Register for the license state change event.
                licenseInformation.addEventListener("licensechanged", displayCurrentLicenseMode);

                // Initialize the license proxy file
                loadTrialModeProxyFile();

             

            } else {
                // TODO: This application has been reactivated from suspension.
                // Restore application state here.
            }

            if (app.sessionState.history) {
                nav.history = app.sessionState.history;
            }
            args.setPromise(WinJS.UI.processAll().then(function () {
                if (nav.location) {
                    nav.history.current.initialPlaceholder = true;
                    return nav.navigate(nav.location, nav.state);
                } else {
                    return nav.navigate(Application.navigator.home);
                }
            }));
        }
    });

The "buy" button click event listener code is this

  function doTrialConversion() {
        var licenseOutput = document.getElementById("licenseOutput");
        licenseOutput.innerHTML = "Buying the full license...";
        var licenseInformation = currentApp.licenseInformation;
        if (!licenseInformation.isActive || licenseInformation.isTrial) {
            currentApp.requestAppPurchaseAsync(false).done(
            function () {
                if (licenseInformation.isActive && !licenseInformation.isTrial) {
                  //  WinJS.log && WinJS.log("You successfully upgraded your app to the fully-licensed version.", "sample", "status");
                    licenseOutput.innerHTML = "Thank you!  You have successfully upgraded your app to the " &
                                               "fully-licensed version";
                } else {
                    //WinJS.log && WinJS.log("You still have a trial license for this app.", "sample", "error");
                    licenseOutput.innerHTML = "Sorry, something went wrong.  You still have a trial version";
                }
            },
            function () {
                //WinJS.log && WinJS.log("The upgrade transaction failed. You still have a trial license for this app.", "sample", "error");
                licenseOutput.innerHTML = "Sorry, something went wrong.  You still have a trial version";
            });
        } else {
            //WinJS.log && WinJS.log("You already bought this app and have a fully-licensed version.", "sample", "error");
        }
        displayCurrentLicenseMode();
    }

When the buy button is clicked, the handler fires and simulates the purchase.  But, when the simulated purchase is done, the div's innerHTML is a "0".  Is this because of the async call to requestAppPurcaseAsync?   It also fires the license changed event handler which when I debug correctly reads the license as a full license.  But it still doesn't assign the div's innerHTML to "Full License".  Again, its just "0".  Here's the license changed event handler

 function displayCurrentLicenseMode() {
        var licenseOutput = document.getElementById("licenseOutput");
        var licenseInformation = currentApp.licenseInformation;
        if (licenseInformation.isActive) {
            if (licenseInformation.isTrial) {
                licenseOutput.innerHTML = "Trial license";
            } else {
                licenseOutput.innerHTML = "Full license";
            }
        } else {
            licenseOutput.innerHTML = "Inactive license";
        }
       
    }

What is the proper way to do this?  Thank you!

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