REST API to Update Attributes

I’m trying to update an attribute value on appointments in Postman but the value will not update.

Here is my PUT request:{{acuBaseUrl}}/Appointment?$filter=ServiceOrderType eq 'PM' and AppointmentNbr eq 'SV001280-1'&$expand=Attributes&$select=AppointmentNbr,Attributes/Attribute,Attributes/Value

Here is the body:

{

    "ServiceOrderType": { "value": "PM" },

    "AppointmentNbr": { "value": "SV001280-1" },

    "Attributes": 

    [

        {

            "AttributeID": {"value": "Is Inspection Complete?"},

            "Value": {"value": true}

        }

    ]

}

I’m not sure what else needs to be done.  I’ve also tried using the Attribute ID of INSPECTED but it still won’t update.  I’m using the Default/22.200.001 endpoint.