# ${EXPORELEASECHANNEL}

### Description

The Expo Release channel variable is designed to help users who develop their apps using a combination of React Native and Expo. The purpose is to provide a Test Run access to the Release Channel as specified when setting up the Test Run. 

You can find support on the use case on the [React Native Expo](/guides/react-native-expo.md) docs page or the documentation provide by Expo directly <https://docs.expo.dev/build/updates/>.

### What does it contain?

An expo release channel URL in the form

```
https://u.expo.dev/[EXPO_PROJECT_ID]?channel-name=[RELEASE_CHANNEL_NAME]&runtime-version=[EXPO_VERSION]&platform=[PLATFORM]
```

Where:

* `EXPO_PROJECT_ID` is set based on the integration parameters
* `RELEASE_CHANNEL_NAME` is set based on the integration parameters, or by the test run settings
* `EXPO_VERSION` is set based on the integration parameters
* `PLATFORM` is automatically set by the test runner based on the build file that is being tested\
  \
  E.g. [`https://u.expo.dev/cd0e344b-8011-4434-91a6-dec86deb68c0?channel-name=moropo-458&runtime-version=exposdk:47.0.0&platform=ios`](https://u.expo.dev/cd0e344b-8011-4434-91a6-dec86deb68c0?channel-name=moropo-458\&runtime-version=exposdk:47.0.0\&platform=ios)

### Usage

In **script** mode

```
appId: ${BUNDLEID}
---
- openLink:
    link: "${BUNDLEID}://expo-development-client/?url=${EXPORELEASECHANNEL}"
```

In s**tep** mode

<figure><img src="/files/HPo7OGdHEC32Rl3K0ooa" alt=""><figcaption></figcaption></figure>

### When is it set?

The variable is set when the user Integrates Moropo with their Expo Account.&#x20;

The variable by default takes the *Default Release Channel* set in the Integration settings

<figure><img src="/files/xJtLDaSJeDI5TOZ8agtj" alt="" width="434"><figcaption></figcaption></figure>

This can be overridden when setting up the Test Run by selecting a specific *Expo release channel* when navigating through the New Test Run screens.&#x20;

<figure><img src="/files/vTCXxAQGxVwwsQH8nKA7" alt="" width="563"><figcaption></figcaption></figure>

It can also be overridden when triggering via CI-CD;

* For the [GitHub Action](/ci-integration/github-action.md) using `expo_release_channel`&#x20;
* For the [Broken mention](broken://pages/t7rIGpQuT6gt7Ym3JwsP)using `expoReleaseChannel`&#x20;


---

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