Hey @seank1968!
I was able to replicate your issue and I found a solution. Even though we create a custom field in Pipedrive called note, Pipedrive internally stores it with a different name (a bunch of random characters). Hence, when you want to access these custom fields you have to refer to them using the field name Pipedrive uses. One way to find out the field name is execute the Get All operation and get the field name. Once you have the field name, you can use it to refer to the custom field.
So when you have the field name that Pipedirve uses internally, use that same field name instead of the field name you created (note in this case).
Hope this helps 