---
title: Metafields and metaobjects reserved prefixes now supported in theme app extensions - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
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  html: https://shopify.dev/changelog/metafields-and-metaobjects-reserved-prefixes-now-supported-in-theme-app-extensions
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---

[Back to Developer changelog](https://shopify.dev/changelog)

August 19, 2024

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* Platform

# Metafields and metaobjects reserved prefixes now supported in theme app extensions

When accessing metafield namespaces or metaobject types, you no longer need to hard code `app--{app_id}`. The `$app` reserved prefix is now available to use in your Liquid files.

Learn more about using reserved prefixes in theme app extensions on [Shopify.dev developer docs](https://shopify.dev/docs/apps/build/online-store/theme-app-extensions/configuration#reserved-prefixes-for-metafields-and-metaobjects).