I wanted to build a Hubspot app that when certain events from Contacts and Companies (insert, update),
it would trigger an API call to a 3rd party API and will return some information in JSON. I know I can achieve this via combination of webhook and timeline API but my problem now is that I want to write to customized fields of Contacts and Companies. The document says that only standard fields can be updated.
Is there a workaround regarding this issue? I really need to write to customized fields