LocalStorage item not created

[doubletaketech]

In my viewModel below, should I see a "projectItems" entry in localStorage? In Chrome, I'm looking at Tools>> Developer Tools >> Resources >> localStorage, but I don't see it getting created? I'm expecting to see an entry in localStorage that contains the full array.

Am I doing something wrong?
Thanks,
Don
projectsVM = {
items : ko.observableArray(null,{persist: 'projectItems'}),
selectedProject : ko.observable({persist: 'selectedProject'})
}
projectsVM.items = ko.mapping.fromJS( arr );
projectsVM.setItem = function(item) {
projectsVM.selectedProject(item);
}