---
url: /process-functions/security-applicationadduser.md
description: Adds a user to an application.
---

# security.applicationAddUser 

Adds a user to an application.

::: warning Deprecated
Use [`app.users.add(user)`](/process-functions/security-application-users-interface#add) instead.
:::

```js
security.applicationAddUser(applicationId, userId, tags)
```

## Parameters

| Parameter | Type | Description |
|---|---|---|
| `applicationId` | `string` | The application id. |
| `userId` | `number` | The user's id. |
| `tags` | `string` | Tags split by a comma. |

## Returns

`true` if the user was added; `false` if the application was not found.

## Examples

```js
const added = security.applicationAddUser("MyActivityId", 1, "Admin, All Scenarios");
```