---
schema_version: "1"
id: 87a399910363dd4455e3b09d91dcf8a7da53ff167004bf9d569090a1c26ef55e
title: Fields.UpdateSendableField
collection: developer
version: current
locale: en-us
portal_url: https://docs.salesforce.com/developer/current/en-us/marketing-cloud/guides/mc-programmatic-content/ssjs_dataExtensionFieldsUpdateSendableField.md
canonical_url: https://developer.salesforce.com/docs/marketing/marketing-cloud/guide/ssjs_dataExtensionFieldsUpdateSendableField.html
source_site: developer.salesforce.com
content_type: documentation
content_hash: cd289739ed47c4b09ab911afbeb228c46e6fd4e3e41f78d09cff5c54d1bd2d3f
products:
  - Marketing Cloud Engagement APIs and Programmatic Languages
  - Marketing Cloud
---
# Fields.UpdateSendableField

## Overview

Updates a data extension field used as part of a send from a current value to a new value

### Syntax

Fields.UpdateSendableField(1)

### Function Properties

<!--complex table-->

| Ordinal | Type   |              | Description                          |
| ------- | ------ | ------------ | ------------------------------------ |
| **1**   | string | **Required** | Attributes of content area to change |

## Example

This sample code updates the subscriber key value in a field to a new value:

```
var updateDE = DataExtension.Init('sendableDataExtension');
var status = updateDE.Fields.UpdateSendableField("DifferentSubKey", "Subscriber Key");
```