How to insert into DB the Radio buttons state

Hi all, my question:
after taping button Register all datas are inserted into Firebase database.
I nee to save also info about state of “Radio buttons” - User, User1, User2

I added flow function “IF” - for checking state of button (primary green ones)
There are three flows - for each state - Set Page Variable
In Firebae DB is table - account_type where I want to insert info - user, user1, user2
please, advice how to?

Thanks you

If i understand correctly. You need to create in your database, an array with user and a bolean for the radio button.

I want to save text user, user1 or user2
It will be better for sorting than true/false value