To set your select’s label and value expressions in AngularJs, you can simply do this example. States and Countries
States have
Code: FL
Name: Florida
Countries have
Code: US
Name: United States
State: <select data-ng-options="state.name for state in vm.stateProvinces track by state.code"></select>
Country: <select data-ng-options="country.name for country in vm.countries track by country.code"></select>