Response body

our response api is

error status code 400
and in body

{
“messages”: [
“error message”
]
}

Screenshot at May 25 22-48-48
i need print error message
code 400 message error message

i use naw

"response": {
    "output": "{{body}}",
    "error": {
        "messages": "{{body}}"
    }
}

}