Making particles stay at its parent (MuzzelFlash)

Hey, im having this problem, when i shoot, muzzel flash doesnt stay at its position and i run threw it. I dont know how to fix it, here's the little script, that i wrote. Im having a Muzzel prefab and im instantiating it. maybe you can help, please?


using UnityEngine;
using System.Collections;

public class Shootings : MonoBehaviour {

public Transform Spawn;
public Transform muzzelFlash;


void Update ()
{

if (Input.GetButtonDown("Fire1"))
{
Instantiate(muzzelFlash, Spawn.position, Spawn.transform.rotation);
}

}

 

turn this:

Code (csharp):

1.  
2. if (Input.GetButtonDown("Fire1"))
3. {
4. Instantiate(muzzelFlash, Spawn.position, Spawn.transform.rotation);
5. }
6.  

into

Code (csharp):

1.  
2. if (Input.GetButtonDown("Fire1"))
3. {
4. GameObject muzzle = Instantiate(muzzelFlash, Spawn.position, Spawn.transform.rotation) as GameObject;
5. muzzle.transform.parent = Spawn;
6. }
7.  

 

I tried it, but i always get this error: NullReferenceException: Object reference not set to an instance of an object
Shootings.Update () Maybe you know whats wrong?

 

make sure muzzleFlash and Spawn are set in the inspector in Unity, before running the project/game.

 

Is there something wrong? I did everything good in the inspector. Thank you for helping.

 

try adding "GameObject." before Instantiate();