I've got a viewModel with a dataSource whose values I end up calculating after some event occurs. What I'm wondering is how to access the dataSource. It seems like directly accessing it in the changeEvent function works, but is it better to access it via the get() method? I'm also wondering if I should be trying to set its member data via set() somethow or if what I'm doing is correct. Here is a dojo, and the code is also below.