Choosing a random child with tag.

What I'm trying to do with my script is if(Held > 1), a random child tagged "WeaponHeld" must be dropped.

Here's the full script:

private var Holding : boolean;
private var Held = 0.0;
private var Dead = false;
function Update()
    {
        var Weapons = GameObject.FindGameObjectsWithTag("Weapon");
        var WeaponsHeld = GameObject.FindGameObjectsWithTag("WeaponHeld");
        for(var Weapon in Weapons)
            {
                if(Holding && !Dead)
                    {
                        Weapon.SendMessage("Hold", SendMessageOptions.DontRequireReceiver);
                    }
                if(!Holding && !Dead)
                    {
                        Weapon.SendMessage("Drop", SendMessageOptions.DontRequireReceiver);
                    }
            }
        for(var WeaponHeld in WeaponsHeld)
            {
                if(Holding && !Dead)
                    {
                        WeaponHeld.SendMessage("Hold", SendMessageOptions.DontRequireReceiver);
                    }
                if(!Holding && !Dead)
                    {
                        WeaponHeld.SendMessage("Drop", SendMessageOptions.DontRequireReceiver);
                    }
            }
        if(Held > 1.0)
            {

            }
    }
function Hold()
    {
        Holding = true;
        Held = Held + 1.0;
    }
function Drop()
    {
        Holding = false;
        Held = Held - 1.0;
    }
function EventGetRailDrop()
    {
        Holding = false;
        Held = Held - 1.0;
    }
function PlayerDie()
    {
        var WeaponsHeld = GameObject.FindGameObjectsWithTag("WeaponHeld");
        for(var WeaponHeld in WeaponsHeld)
            {
                WeaponHeld.SendMessage("PlayerDie", SendMessageOptions.DontRequireReceiver);
            }
        Dead = true;
        Holding = false;
        Destroy(this);
    }

I'd make an array of all weapons held and then just use a random int between 0 and array.lenght to pick one. Let me know if you need help with this.