particles on magnet turn on and off

unity_Project/Assets/Scripts/MagnetLaser.cs

@@ -9,13 +9,14 @@ public class MagnetLaser : MonoBehaviour {
 	public int segments;
 	public float randomSize;
 	private magnetGun gun;
+	private ParticleSystem[] sparks;
 
 
 	// Use this for initialization
 	void Start () {
 		gun = player.GetComponent<magnetGun> ();
 		lr = GetComponent<LineRenderer> ();
-		
+		sparks = gun.GetComponentsInChildren<ParticleSystem>();
 	}
 
 
@@ -25,6 +26,10 @@ public class MagnetLaser : MonoBehaviour {
 	void Update () {
 
 		if (gun.GravityTarget != null) {
+
+			sparks[0].enableEmission = true;
+			sparks[1].enableEmission = true;
+
 			lr.enabled = true;
 			lr.SetVertexCount(segments+1);
 			lr.SetPosition(0, rodstart.transform.position);
@@ -48,6 +53,8 @@ public class MagnetLaser : MonoBehaviour {
 
 		} else {
 			lr.enabled = false;
+			sparks[0].enableEmission = false;
+			sparks[1].enableEmission = false;
 		}