How to clear a related Field (foreign) with formula?

[shalmaxb]

Hello, how can I set a formula to clear a formerly put foreign field in a custom entity from a relationship to empty. I would not remove a specific ID, but in general set this field to empty. Is that possible?

[Maximus]

Hi,
You cannot do this as the foreign type field just fetches and represents the value of the related entity on live.