True/False isTrigger for Collider array?

I'm trying to set the triggers for an array of colliders to false once the player beats a level. Here is my code:

public class PlayerController : MonoBehaviour {

 public float speed;
 public Text winText;
 public GameObject nextLevel;
 public GameObject[] obstacles;
 public Collider[] obstacleTrigger;

 private Rigidbody rb;
 private int count;
 private int pickups;
 private GameObject[] cubes;


 void Start ()
 {
     rb = GetComponent<Rigidbody>();
     count = 0;
     SetCountText();
     winText.text = "";
     nextLevel.SetActive(false);
     cubes = GameObject.FindGameObjectsWithTag("Pick Up");
     pickups = cubes.Length;
     obstacles = GameObject.FindGameObjectsWithTag("Obstacle");
     for (int i = 0; i < obstacles.Length; i++)
     {
         obstacleTrigger = obstacles[i].GetComponents<Collider>();
     }
 }


 void FixedUpdate ()
 {
     float moveHorizontal = Input.GetAxis("Horizontal");
     float moveVertical = Input.GetAxis("Vertical");

     Vector3 movement = new Vector3(moveHorizontal, 0, moveVertical);

     rb.AddForce(movement * speed);
 }

 void OnTriggerEnter(Collider other)
 {
     if (other.gameObject.CompareTag("Pick Up"))
     {
         other.gameObject.SetActive(false);
         count = count + 1;
         SetCountText();
     }

     if (other.gameObject.CompareTag("Obstacle"))
     {
         SceneManager.LoadScene(SceneManager.GetActiveScene().name);
     }
 }

 void SetCountText()
 {
     if (count >= pickups)
     {
         winText.text = "You Win!";
         nextLevel.SetActive(true);
         obstacleTrigger.isTrigger = false;

     }
 }

}

What can I use instead of isTrigger to set all of my obstacleTrigger's Is Trigger to false?