# Setting TransactionAttributes
<a name="set-trans-attributes"></a>

The following example shows how to set `TransactionAttributes` alongside a [PlayAudio](play-audio.md) action and pass the attributes from an AWS Lambda function to a SIP media application.

```
{
    "SchemaVersion": "1.0",
    "Actions": [
        {
            "Type": "PlayAudio",
            "Parameters": {
                "ParticipantTag": "LEG-A",
                "AudioSource": {
                    "Type": "S3",
                    "BucketName": "mtg1-sipmedia-app-iad",
                    "Key": "Welcome3.wav"
                }
            }
        }
    ],
    "TransactionAttributes": {
        "key1": "value1",
        "key2": "value2"
    }
}
```