Can you reference a root observable from inside an ObservableCollection template?

I am using the the HTML viewer SDK to create a dynamic form.   I have an ObservableCollection with several levels of nested Observables and ObservableCollections.  When creating the html and passing the @source to render a template-for where I am at in the hierarchy, I would like to be able to reference a source above the current scope.  Is there a way to set the source context to the base/root in order to display that content or do I need to migrate all of the content from the higher level scope down to the collection objects?

 

 

--Marc