DurationInput example: 

```js
initialState = {
	'duration.hours': 10,
	'duration.minutes': 15
};

<div>
	<p>{JSON.stringify(state)}</p>
	<DurationInput
		value={{
			hours: state['duration.hours'],
			minutes: state['duration.minutes']
		}}
		onChange={e => setState({ [e.target.name]: e.target.value })}
	/>
</div>
```