---
title: Add a response header with a static value
description: Create a response header transform rule to add a `set-cookie` HTTP header to the response with a static value (`cookiename=value`).
image: https://developers.cloudflare.com/core-services-preview.png
---

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# Add a response header with a static value

Create a response header transform rule to add a `set-cookie` HTTP header to the response with a static value (`cookiename=value`).

The following response header transform rule adds a header named `set-cookie` with a static value (`cookiename=value`) to the HTTP response:

Text in **Expression Editor**:

```
starts_with(http.request.uri.path, "/en/")
```

Selected operation under **Modify response header**: _Add_

**Header name**: `set-cookie`

**Value**: `cookiename=value`

This rule would keep any existing `set-cookie` headers already present in the HTTP response.

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```