Instantiate Prefab dont work

Hey, my problem is I want to instantiate a prefab (its a laser) on an ufo which is moving up and down with the Ping Pong effect (Ufo Movement is script 1). I've created a script which should instantiate the prefab on the position of the ufo, but it wont spawn (instantiate Laser: Script 2). The Debug.Log("test"); doesnt get triggert.

Extra information: I'm controlling the Ufo with my Score, which means, when the player reaches a score of 100 the ufo will appear (with the command: ufo.SetActive(true);). I thought its usefull to let you know this. But this is (hopefully) not the problem.

Script 1:

 public class MovementBoss_2 : MonoBehaviour
  {
 
     public float speed;
 
     void start()
     {              
     }
     void Update()
     {
         transform.position = new Vector2 (0, Mathf.PingPong (speed * Time.time , 14-5)+5);
     }

Script 2:

 {
 
     public GameObject Laser;
 
     void Start()
     {
         
     }
 
     void update()
     {
         Vector3 Position = new Vector3(transform.position.x, transform.position.y, transform.position.z); 
         Instantiate(Laser, Position, Quaternion.identity);
         Debug.Log("test");
     }