Retrieve categoryId optional fields from a timelog

Hi,

API /timelogs has two optinal fields for response: billingType and categoryId. On request I use parameter fileds to show optional fields, which works just for billingType. How we can retriev e categoryId?

Bellow you have the  requested created on power query that is not working (it works for billingType changing fields=[""billingType""])

Thanks,

REQUEST ON POWER QUERY:

let
Source = Web.Contents("https://www.wrike.com/api/v4/timelogs" & "?createdDate={""start"":""2020-01-01T00:00:00Z""}" & "&fields=[""billingType"",""categoryId""]", [Headers=[Authorization="bearer TOKEN]]),
convertToJson = Json.Document(Source)
in
convertToJson