---
title: 'POST /2015-03-31/functions/{FunctionName}/versions'
description: 'Publish a new function version'
---

# POST /2015-03-31/functions/{FunctionName}/versions

Publish a new function version

| Detail | Value |
|---|---|
| Operation ID | `cloud.publishVersion` |
| Method | `POST` |
| Path | `/2015-03-31/functions/{FunctionName}/versions` |
| Connector | [AWS Lambda](./) |

## Parameters

_No parameters._

## Using this endpoint in a workflow

1. Add an **API Call** node to your workflow.
2. Pick your AWS Lambda connection from the Connection dropdown.
3. In the Operation dropdown, select `cloud.publishVersion`.
4. Fill in the parameter fields that appear. Use `{{...}}` to reference upstream values.

## What it returns

The `API Call` node writes the response to the workflow context:

```
{
  status: 200,
  success: true,
  data: { ...response body from the API... },
  latencyMs: 142
}
```

Reference response fields downstream as <code v-pre>{{nodeId.data.path}}</code>. The exact response shape is documented on the upstream AWS Lambda API reference.