Select user profile field inside a user profile field possible?

[Amit86]

Hello everyone,

I am trying to add a new user profile field.
This user profile field is a 'Single selection menu'
I'd like the menu to contain fields 6 to 15 as a selection

Is that possible?

To make things more realistic,
field6 to 15 are player names my members has in their game-server accounts (it auto fills not editable using some php script)
I'd like for them to be able to choose a main player from the list