# Advanced Configuration
URL: /docs/react-native/advanced

***

title: Advanced Configuration
description: Setting user data and sending metadata
---------------------------------------------------

## Setting user data

You can set user data by calling the `setUserData` function. This function takes an object with the following properties:

* `email`: The user's email.
* `userMeta`: The user's metadata.

You can use the `userMeta` to store any additional information about the user, e.g. their name, subscription tier & status, etc.

```tsx
import { setUserData } from '@featurebuddy/react-native';

const apiKey = 'your-api-key';

await setUserData(apiKey, {
  email: 'john.doe@example.com',
  userMeta: { 'custom-key': 'custom-value' },
});
```

## Sending metadata with requests

You can send metadata with requests by providing a `meta` object to the `Features` component.

It can be any key-value pairs.

Here is an example of some useful metadata you can send using the `expo-application` and `expo-device` packages:

```tsx
import * as Device from 'expo-device';
import * as Application from 'expo-application';
import { Features } from '@featurebuddy/react-native';

const apiKey = 'your-api-key';

const meta = {
  appVersion: Application.nativeApplicationVersion,
  appBuild: Application.nativeBuildVersion,
  deviceBrand: Device.brand,
  deviceType: Device.deviceType ? Device.DeviceType : 'Unknown',
  deviceYearClass: Device.deviceYearClass?.toString(),
  deviceModelName: Device.modelName,
  osName: Device.osName,
  osVersion: Device.osVersion,
  platformApiLevel: Device.platformApiLevel?.toString(),
}

export const FeedbackScreen = () => {
  return <Features apiKey={apiKey} meta={meta} />;
};
```