Picking up and Dropping Weapons

The base of my game is from the FPS tutorial, and so were many parts of this script. Its a game were theres a console on screen, and after you unlock a weapon, you can type the weapons name into the console to equip it. But I dont want to be able to get it through the console unless you found it.

 //These are what you collide with to get permision to get weapon from console
 
 var MG : Transform;
 var RL : Transform;
 var PG : Transform;
 
 //These functions were supposed to allow acces to the weapon you unlocked when they were called... Mega fail
 var MGselect = function() {
 if (Weapon Console == "MG") {
 SelectWeapon(1)
 }
 }
 var RLselect = function() {
 if (WeaponConsole == "RL") {
 SelectWeapon(2)
 }
 }
 var PGselect = function() {
 if (WeaponConsole == "PG") {
 SelectWeapon(3)
 }
 var WeaponConsole : String = "Weapon Choice";
 
 function OnGUI () {
     //The console you type into to accses the weapon you got
     WeaponConsole = GUI.TextField (Rect (10, 10, 200, 20), Weapon Console, 25);
 }
 
 function Start () {
     //Default Weapon
     SelectWeapon(0);
     
 }
 
 function Update () {
     // Did the user press fire?
     if (Input.GetButton ("Fire3"))
         BroadcastMessage("Fire");
     
     
     if ( Vector3.Distance(MG.position, transform.position ) < 2) {
         SelectWeapon(1);
         MGselect();
         //calling the functions
     }    
     if ( Vector3.Distance(RL.position, transform.position ) < 2) {
         SelectWeapon(2);
         RLselect();
     }    
     else if ( Vector3.Distance(PG.position, transform.position ) < 2) {
         SelectWeapon(3);
         PGselect()
     }    
 }
 
 function SelectWeapon (index : int) {
     for (var i=0;i < transform.childCount;i++)    {
         // Activate the selected weapon
         if (i == index)
             transform.GetChild(i).gameObject.SetActiveRecursively(true);
         // Deactivate all other weapons
         else
             transform.GetChild(i).gameObject.SetActiveRecursively(false);
     }
 }