Amazon CodeCatalyst is no longer open to new customers. Existing customers can continue to use the service as normal. For more information, see [How to migrate from CodeCatalyst](migration.md).

# 'AWS Lambda invoke' variables
<a name="lam-invoke-action-variables"></a>

By default, the **AWS Lambda invoke** action produces one variable per top-level key in the Lambda response payload.

For example, if the response payload looks like this:

```
responsePayload = {
  "name": "Saanvi",
  "location": "Seattle",
  "department": {
    "company": "Amazon",
    "team": "AWS"
  }
}
```

...then the action would generate the following variables.


| Key | Value | 
| --- | --- | 
|  name  |  Saanvi  | 
|  location  |  Seattle  | 
|  department  |  \$1"company": "Amazon", "team": "AWS"\$1  | 

**Note**  
You can change which variables are generated using the `ResponseFilters` YAML property. For more information, see the [ResponseFilters](lam-invoke-action-ref.md#lam.invoke.response.filters) in the ['AWS Lambda invoke' action YAML](lam-invoke-action-ref.md).

The variables produced and set by the 'AWS Lambda invoke' action at run time are known as *predefined variables*.

For information about referencing these variables in a workflow, see [Using predefined variables](workflows-using-predefined-variables.md).