Two Typeforms to one Notion database

I’m trying to map responses from two typeforms to go to the same Notion database, and I was successful in mapping all the fields (with some tweaks). However, I would like my Notion database to reflect the source of each response. i.e. each entry having a “source” of either “typeform A” or “typeform B”.

Is this not supported, is there a workaround, or can I just not make this happen?

Any help would be tremendously appreciated.

EDIT: Figured out how to do with with the help of my colleague. In the “Create” tab, click into “Logic”, then “Personalize with data”, then “Variables”, and you can add a custom variable. In my case, I named the variable “source”, and the type set as “Text”. So you’d have to do this in both forms.