BuddyPress.org

How do I insert data into the xprofile fields?

Say during registration, I have a dropdown profile field called “game” that should be entered by the user. field values (battlefield , starcraft , dota)

I have 1 more fields , say “type” which has the following selectable values =”moba, fps, strategy”

After he submits the form, I want to automatically insert a value from the selectable “type” field into the database.

i.e, if user inputs “battlefield”, I want to automatically in the backend select the “fps” value in the “type” field and save it in the database.

How do I do this???