detect a new name instead of player1

[Charlotte]

hi,
In a multiplayer game i have got 3 soldier and 1 civilian, I have wrote the script to use individual radios and to find out the distance between the civilian and the players.. My question is that if the soldier wants to change their name from player1, player2 and player3 to Cobra, Coral and Python before starting the game, how can i make the scripts to detect who is player1, 2 and 3.
Is there any command that can read the name given to the soldier and automatically put it instead of player1 to the name given.

Thanks before hand for your help