Help variable isn't getting set by Instantiate c#

so the problem is that "selection" isn't getting set by the instantiate. and i can't see the problem.
i'm also getting no errors at all with it, so that doesn't help.

Anny help would be appreciated. =D

here you have the script

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3. using System.Collections.Generic;
4.  
5. public class levelEditor : MonoBehaviour {
6.     public Transform world;
7.    
8.     public myObjectsList list;
9.     public editorMenu menu;
10.    
11.     //cam
12.     Vector3 nextPosition;
13.     public float moveSpeed;
14.  
15.     //pointer
16.     public int selectionID = 1;
17.     public Transform selection;
18.    
19.     RaycastHit hit;
20.    
21.     void Start(){
22.         if(list == null)Debug.Log("myObjectsList is empty");
23.         if(menu == null)Debug.Log("editorMenu is empty");
24.     }
25.    
26.     // Update is called once per frame
27.     void Update () {
28.         cam();
29.        
30.         if(Input.GetAxis("Mouse ScrollWheel") != 0){
31.             if(selection != null)Destroy(selection.gameObject);
32.             changeSelect((int)Input.GetAxis("Mouse ScrollWheel"));
33.         }
34.        
35.         Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
36.        
37.         if(Physics.Raycast(ray, out hit)){
38.             if(hit.transform.tag == "allow G"){
39.                 hit.transform.renderer.enabled = false;
40.                 if(selection != null){
41.                     selection.position = new Vector3(hit.transform.position.x+1,hit.transform.position.y,hit.transform.position.z+1);
42.                    
43.                     if(Input.GetButtonDown("Fire1")){
44.                         //changeSelect(0);
45.                         selection = Instantiate(list.objs[selectionID].prefab, new Vector3(0f,0f,0f), Quaternion.identity) as Transform;
46.                     }
47.                 }
48.             }
49.         }
50.     }
51.  
52.     void changeSelect(int change){
53.         selectionID += change;
54.         while(list.objs[selectionID].show = false){
55.             selectionID += change;
56.         }
57.         selection = Instantiate(list.objs[selectionID].prefab, new Vector3(0f,0f,0f), Quaternion.identity) as Transform;
58.     }
59.  
60.     void cam(){
61.         Vector3 to = transform.position;
62.         if(Input.GetButton("Horizontal"))to.x += Input.GetAxis("Horizontal")*moveSpeed;
63.         if(Input.GetButton("Vertical"))to.z += Input.GetAxis("Vertical")*moveSpeed;
64.         if(Input.GetButton("height movement"))to.y += Input.GetAxis("height movement")*(moveSpeed/2);
65.         transform.position = to;
66.     }
67. }

 

Are you sure Instantiate() is being called? What is list.objs[selectionID].prefab? Is it null? Is it a transform?

Is your raycast hitting in a way that you expect? ScreenPointToRay() sometimes works better when you pass a vector with non-zero Z.

In general, check your assumptions.

 

everything works as it should expect the instantiate...
but i'll double check everything