Rotate Camera

Hi. I'm making a platformer and I want the camera to rotate. I'm doing this via animator. For some reason, when I start the scene, it rotates, then goes back to normal and won't rotate again this is what I'm doing

using UnityEngine; using System.Collections;

public class CameraBrain : MonoBehaviour {

 public Animator anim;
 // Use this for initialization
 void Start () {
 
 }
 
 // Update is called once per frame
 void Update () {
 
 }




 void OnTriggerEnter2D (Collider2D collision)
 {
     if (collision.gameObject.tag == "rotate") {
         anim.SetBool ("Rotate", true);    }
     if (collision.gameObject.tag == "normal_View") {
         anim.SetBool ("Rotate", false);}
 }

}

Can anybody help please?