Update and persist credential property from workflow

Hi! I want to develop a custom node for GoCardless but have a requirement for the credentials node I can’t figure out if there is support for.

The user should input a long-lived token which the credentials node uses to get and persist a 24-hour token. It would be great if I could also update it from the workflow node if it returns with a “token expired” message, but that I can work around if necessary.