How can I update custom event attendee status after payment in HubSpot?

Is it possible to create a workflow for the following setup:

We have a form where contacts can register for an event. We didn’t want the form fields in the contact object so created a custom object called Event Attendee (associated to contacts). So when a contact registers, the system automatically creates an event attendee page connected to that contact with all details.

Once registered, the customer can pay by credit card using a payment link on the form.

The workflow should be triggered when a customer completes the payment via the payment link and then it should go to the contact’s event attendee page to update the status field there. Reason I find it tricky is because payments and event attendees are not associated directly but only via the contact in between. (hope this all makes sense).

Hi @MargotLPG,

Can you just copy that from the contact to the latest associated event attendee record using a workflow? The contact would enroll in the workflow each payment, so there shouldn’t be any issues if the contact registers for multiple events.
Josh