Hi Carlos
If you want the aircraft P4-BSA and P4-AAK to show the correct nationality flag (Aruba) if they ever appear on RadarBox, then replace your current file (in the /Data folder) with this new file.
If you don't care about that, you don't have to do anything!
BTW They have been active recently, and hawk-eyed Terry must have spotted them.
Edit - I've just spotted P4-KCI and P4-KCK both showing a Dutch flag - I must let him know!