Problem setting CustomFieldValues for item via PostMan as a test...

in Development
I am trying to set a CustomFieldValues for an item and am getting the following error:
{
"httpCode": "400",
"httpMessage": "Bad Request",
"message": "JSON Input was invalid. Error Message: Syntax error",
"errorClass": "InvalidArgumentException"
}
Here is my request:
https://api.lightspeedapp.com/API/Account/{{accountID}}/Item/29360.json
with a body of:
{
"CustomFieldValues": {
"CustomFieldValue": [
{
"customFieldID": "6",
"type": "string",
"value": "This is a test"
}
]
}
}
Tags:
Answers
It should work as I was able to do the request with your payload in my test shop.
If you're still having issues, can you send me your account_ID and let me know if you're oké with me trying to do the call on your account.
I got it to work directly not from Postman...