---
title: Set LineItem attributes using CartTransform - 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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---

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

April 1, 2024

Tags:

* API
* 2024-04

# Set LineItem attributes using CartTransform

As of 2024-04, you can set LineItem attributes on Bundle items using `CartTransform` [`Merge`](https://shopify.dev/docs/api/functions/reference/cart-transform#example-merge-operation) and [`Expand`](https://shopify.dev/docs/api/functions/reference/cart-transform#example-expand-operation) operations.

You can set custom attributes to either the Bundle item or its components using the new field.

Learn more about Bundles on [Shopify.dev](https://shopify.dev/docs/api/functions/reference/cart-transform).