Quarternion.LookRotation problem

Hi, I am having trouble with, what I seemed, is the simple thing.

I want my object to look straight at my target obviously , so for a test i made a new scene, created cube and a cylinder, set them apart in the scene and attached this script to the cylinder (cylinder is a what is supposed to look at the target)

Code (csharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class RotationTest : MonoBehaviour
5. {
6.     public Transform target;
7.    
8.     void Update()
9.     {
10.         transform.rotation = Quaternion.LookRotation(target.position - transform.position);
11.     }
12. }

I set the target in the inspector and run the player. By moving the cube cylinder rotates but its longer side (it seems that it is perpendicular to the cube). So i figured that i need somehow to tell unity what side i need to point at the target. i tried this

Code (csharp):

1. transform.rotation = Quaternion.LookRotation(target.position - transform.position,Vector3.up);

and this

Code (csharp):

1. transform.rotation = Quaternion.LookRotation(target.position - transform.position,Vector3.left);

but it does not work, nothing is changed.

Check out the image about more details. And thanks!

 

I imagine you've already figured a solution at this point, but I thought I'd offer a solution since looking at your code helped me fix an issue with my own.

If you haven't tried setting the Up axis in LookRotation to Forward, as well, then the easiest thing to to would be to parent the cylinder to an empty gameobject, and then put the code onto that instead.Then you can rotate the cylinder to the correct orientation from within that gameobject.