App Studio - JSON data source

Hi,
I really would like know how to incorporate JSON as a datasource for my app studio apps... Can someone please point me in the right direction?
I have tried this example: http://blogs.msdn.com/b/quick_thoughts/archive/2014/07/13/rest-apis-in-app-studio-part-2-changing-the-source-code.aspx but unfortunately can only get it to half work ( ie showing only the movie titles no images or synopsis etc)
even tho when I step thru the movie collection the relevant data is there.
So any advice or other tutorials on the same subject would be greatly appreciated...

Hi,
Were you able to resolve your issue?
I came across the same problem. My JSON has ImageUrl and ArticleUrl and when I added this JSON schema to display in the detail page or the App Studio, I kept getting an error in the MainPage.xaml
"object reference not set to an instant of an object.
Can I add two or more different Web API sources for App Studio or I'm limited to just one? Below is the details error in the MainPage.xaml.
at AppStudio.Data.HighlightRootSchema.GetHashCode()
at System.Collections.Generic.GenericEqualityComparer`1.GetHashCode(T obj)
at System.Linq.Set`1.InternalGetHashCode(TElement value)
at System.Linq.Set`1.Find(TElement value, Boolean add)
at System.Linq.Enumerable.<IntersectIterator>d__92`1.MoveNext()
at System.Linq.Enumerable.<OfTypeIterator>d__aa`1.MoveNext()
at AppStudio.Data.ObservableCollectionExtensions.AddRangeUnique[T](ObservableCollection`1 oldCollection, IEnumerable`1 newItems)
at AppStudio.Data.DataSourceBase`1.<LoadDataAsync>d__1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at AppStudio.ViewModels.ViewModelBase`1.<LoadItemsAsync>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at AppStudio.ViewModels.MainViewModel.<LoadDataAsync>d__0.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.GetResult()
at AppStudio.Views.MainPage.<OnNavigatedTo>d__0.MoveNext()
App Studio Team, please help.
Thanks,
GP

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