# Put lifecycle hook

{% code title="AWS only" %}

```
PUT /v2/alm/stack/{stack_id}/lifecyclehook
```

{% endcode %}

| **Parameters** | **Type** | **Required** | **Details**                                                                                                                                                        |
| -------------- | -------- | ------------ | ------------------------------------------------------------------------------------------------------------------------------------------------------------------ |
| heartbeat      | string   | no           | The time in seconds of which lifecyclehook will apply to instances (in the same autoscaling group) when terminates on scale-in or restarts. Default value is 3600. |

Request header:

```
Authorization: Bearer eyJ0eXAiOiJ83fjQb3LzMeXzQfME
Content-Type: application/json
```

Request body:

```ruby
{
    "heartbeat":3600
}
```

Example response:

```ruby
HTTP/1.1 200 OK
{
    "status":"success"
}
```