How do i change a bool to true on collide when the bool is on a different script

Self explanatory but here is my scripts. using UnityEngine; using System.Collections; using UnityEngine.Networking;

 public class Spawnold3 : MonoBehaviour
 {
     public GameObject AssaultPlayer;
     public GameObject ReconPlayer;
     public static bool Support = false;
     public static bool Engineer = false;
     public GameObject EngineerPlayer;
     public static bool tron = false;
     public GameObject TronPlayer;
     public Transform[] spawnPoints;
     public Camera spawnCam;
     public AudioListener spawnListener;
     public bool spawned = false;
     public static Spawnold3 instance;
 
     void Start(){
         instance = this;
 
     }
 
     void OnGUI()
     {
         if (Network.isServer || Network.isClient) {
             if (!spawned) {
                 if (GUI.Button (new Rect (Screen.width / 10 - 50, Screen.height / 10 - 25, 100, 50), "assault")) {
                     SpawnAssault ();
                 }
                 if (Support ==true)
                 if (GUI.Button (new Rect (Screen.width / 10 - 160, Screen.height / 10 - 25, 100, 50), "support")) {
                     SpawnSupport ();
                 }
                 if (Engineer == true) {
                     if (GUI.Button (new Rect (Screen.width / 10 - -60, Screen.height / 10 - 25, 100, 50), "Engineer")) {
                         SpawnEngineer ();
                     }
                     if (tron == true) {
                         if (GUI.Button (new Rect (Screen.width / 10 - -60, Screen.height / 10 - 25, 100, 50), "tron")) {
                             Spawntron ();
                         }
                     }
                 }
             }
         }
     }
     void SpawnSupport()
     {
         spawned = true;
         int random = Random.Range(0, spawnPoints.Length);
         Network.Instantiate(ReconPlayer, spawnPoints[random].position, spawnPoints[random].rotation, 0);
         spawned = true;
         spawnCam.enabled = false;
         spawnListener.enabled = false;
         spawned = true;
     }
     void SpawnEngineer()
     {
         spawned = true;
         int random = Random.Range(0, spawnPoints.Length);
         Network.Instantiate(EngineerPlayer, spawnPoints[random].position, spawnPoints[random].rotation, 0);
         spawned = true;
         spawnCam.enabled = false;
         spawnListener.enabled = false;
         spawned = true;
     }
     void SpawnAssault()
     {
         spawned = true;
         int random = Random.Range(0, spawnPoints.Length);
         Network.Instantiate(AssaultPlayer, spawnPoints[random].position, spawnPoints[random].rotation, 0);
         spawned = true;
         spawnCam.enabled = false;
         spawnListener.enabled = false;
         spawned = true;
     }
     void Spawntron()
     {
         spawned = true;
         int random = Random.Range(0, spawnPoints.Length);
         Network.Instantiate(TronPlayer, spawnPoints[random].position, spawnPoints[random].rotation, 0);
         spawned = true;
         spawnCam.enabled = false;
         spawnListener.enabled = false;
         spawned = true;
     }
 
     public void Die()
     {
         Screen.lockCursor = false;
         spawned = false;
         spawnCam.enabled = true;
         spawnListener.enabled = true;
     }
 
 }

Here is my choos random object and spawn script but i want to make it so the object that spawns has a script to it so that when it collides with something it will change a bool to true. which in my case is a case opener that when it collides it sets the bool to true so you can use that class.

 using UnityEngine;
 using System.Collections;
 
 public class CaseChooseRandom : MonoBehaviour {
 
     public Transform[] teleport;
     public GameObject[] People;
     public GameObject[] Explosion;
 
     public void Start(){ //this will spawn only one prefeb, if you want call it many time, create  a new function and call it or create for loop
 
         if (CaseOpen.HasCase == true) {
             int tele_num = Random.Range (0, 1);
             int People_num = Random.Range (0, 1);
             int Explosion_num = Random.Range (0, 1);
 
             Instantiate (Explosion [Explosion_num], teleport [tele_num].position, teleport [tele_num].rotation);
             Instantiate (People [People_num], teleport [tele_num].position, teleport [tele_num].rotation);
             GameObject.Find ("weaponBox").SetActive (false);
             CaseOpen.HasCase = false;
 
         if (CaseOpen.HasCase == false) {
                 
                 GameObject.Find ("UINOCase").SetActive (true);
 
             }
         }
     }
 }