---
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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### Tags

[ Response modification ](https://developers.cloudflare.com/search/?tags=Response%20modification) 

# 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.

```json
{"@context":"https://schema.org","@type":"BreadcrumbList","itemListElement":[{"@type":"ListItem","position":1,"item":{"@id":"/directory/","name":"Directory"}},{"@type":"ListItem","position":2,"item":{"@id":"/rules/","name":"Rules"}},{"@type":"ListItem","position":3,"item":{"@id":"/rules/transform/","name":"Transform Rules"}},{"@type":"ListItem","position":4,"item":{"@id":"/rules/transform/examples/","name":"Transform Rules examples"}},{"@type":"ListItem","position":5,"item":{"@id":"/rules/transform/examples/add-response-header-static-value/","name":"Add a response header with a static value"}}]}
```