weapons platform broadcastmessage mot working

hey guys i tried to make a weapons pickup

im having problems with the broadcastmessage i would like to make it so that when the player enters the trigger the player gets that weapon

also i wanted to get multiple slots for weapons and than get somthing like chekker boxen weapon 1.2.3 up to 8 or 10 so that i can chek one of them and that wil be the active weapon thats displayed

i was thinking to set all weapons in the slots Enabled false in the player weapons switch en than say hey when i enter the triger i Enable the weapon in my weapon switch

but when i enter the trigger the broadcast message is not working

also how is the weapon switch set to mouse wheel thanks guys

Weapons Platform (See the picture)

 using UnityEngine;
 using System.Collections;
 
 public class WeaponsDepot : MonoBehaviour {
 
     public GameObject player;
     public GameObject[] weapons;
     public GameObject RocketLouncher;
     public Transform ammo;
 
     public int currentWeapon = 0;
 
     private int nrWeapons;
 
     void Start()
     {
 
         nrWeapons = weapons.Length;
 
         SwitchWeapon(currentWeapon); // Set default Weapon
 
     }
 
     void Update()
     {
         for (int i = 1; i <= nrWeapons; i++)
         {
             if (Input.GetKeyDown("" + i))
             {
                // currentWeapon = i - 1;
 
                // SwitchWeapon(currentWeapon);
 
             }
         }
 
     }
 
     void SwitchWeapon(int index)
     {
 
         for (int i = 0; i < nrWeapons; i++)
         {
             if (i == index)
             {
                 weapons[i].gameObject.SetActive(true);
             }
             else {
                 weapons[i].gameObject.SetActive(false);
             }
         }
     }
 
     //Invoked when a button is clicked.
     public void OnTriggerEnter(Collider other)
     {
         //Finds and assigns the child of the player named "Gun".
         //RocketLouncher = other.transform.Find("GunCam").gameObject;
         RocketLouncher.BroadcastMessage("IsRocketLouncher");
 
         //If the child was found.
         if (RocketLouncher != null)
         {
             //Find the child named "ammo" of the gameobject "magazine" (magazine is a child of "gun").
             ammo = RocketLouncher.transform.Find("magazine/ammo");
         }
         else Debug.Log("No child with the name 'Gun' attached to the player");
         Debug.LogError("No child with the name 'Gun' attached to the player");
     }
 }

Switch Weapons /is on a child of my GunCam.

 using UnityEngine;
 using System.Collections;
 
 public class SwitchWeapons : MonoBehaviour
 {
 
     public GameObject[] weapons; // push your prefabs
 
     public int currentWeapon = 0;
 
     private int nrWeapons;
 
     void Start()
     {
 
         nrWeapons = weapons.Length;
 
         SwitchWeapon(currentWeapon); // Set default gun
 
     }
 
     void Update()
     {
         for (int i = 1; i <= nrWeapons; i++)
         {
             if (Input.GetKeyDown("" + i))
             {
                 currentWeapon = i - 1;
 
                 SwitchWeapon(currentWeapon);
 
             }
         }
 
     }
 
     void SwitchWeapon(int index)
     {
 
         for (int i = 0; i < nrWeapons; i++)
         {
             if (i == index)
             {
                 weapons[i].gameObject.SetActive(true);
             }
             else {
                 weapons[i].gameObject.SetActive(false);
             }
         }
     }
     public void IsRocketLouncher()
     {
         currentWeapon = 0;
     }
 
 }