Schema format for updating a custom field

Hey folks,

I'm using the FUB API docs to test updating a custom field. To start, and get an example of the payload, I'm testing on https://docs.followupboss.com/reference/people-id-put

It is not clear to me, how to specify the value for the custom field. I've tried customSpouse-Fubid: 999, customSpouse-Fubid=999 . . . Once I get a sample payload in this test environment, I can add it to my API class and test in my sandbed.

Code generated when I fill out the tool form

import requests

url = "https://api.followupboss.com/v1/people/797?mergeTags=false"

payload = { "custom*": "customSpouse-Fubid 798" }
headers = {
"accept": "application/json",
"content-type": "application/json"

}

response = requests.put(url, json=payload, headers=headers)

print(response.text)

Output: "errorMessage": "Invalid fields in the request body: custom*."