Checking name from hit from Raycast in array

I´m trying to check an array of obstacles on which the enemy AI shouldn´t be walking. Each step, I´m casting a Raycast to the left, front and right. If it hits something, it´s checking the name of the object the Raycast hit in the array. If it´s in that array, the enemy AI shouldn´t be walking there.

This is the code:

 var obstacles = ["Border", "Boundary", "BoundaryFlame"]; 
 var frontAvailable = true;
 var leftAvailable = true;
 var rightAvailable = true;
 var hitFront: RaycastHit;
 if (Physics.Raycast(transform.position, transform.position + transform.forward, hitFront, 1.5)) {
 Debug.Log("I hit this in front: ");
 Debug.Log(hitFront.collider.gameObject.name);
     for (var i = 0; i < obstacles.length; i++)
     {
         if (obstacles[i].IndexOf(hitFront.collider.gameObject.name) > 0)
         {
             Debug.Log("Hit in front!");
             frontAvailable = false;
         }
     }
 }
 var hitLeft: RaycastHit;
 if (Physics.Raycast(transform.position, transform.position +- transform.right, hitLeft, 1.5)) {
 Debug.Log("I hit this on my left: ");
 Debug.Log(hitFront.collider.gameObject.name);
     for (var j = 0; j < obstacles.length; j++)
     {
         if (obstacles[j].IndexOf(hitLeft.collider.gameObject.name) > 0)
         {
             Debug.Log("Hit in left!");
             leftAvailable = false;
         }
     }
 }
 var hitRight: RaycastHit;
 if (Physics.Raycast(transform.position, transform.position + transform.right, hitRight, 1.5)) {
 Debug.Log("I hit this on my right: ");
 Debug.Log(hitFront.collider.gameObject.name);
     for (var k = 0; k < obstacles.length; k++)
     {
         if (obstacles[k].IndexOf(hitRight.collider.gameObject.name) > 0)
         {
             Debug.Log("Hit in right!");
             rightAvailable = false;
         }
     }
 }

The problem is, all 3 booleans stay true. Ingame, I see the AI walking random ways (into walls sometimes). That means the checking of gameobjects isn't working right.

The Debug.Log shows it sometimes hits Boundary(Clone). In that case, it should set the boolean to false. In the array of obstacles, I've placed Boundary, and the index of that name in Boundary(Clone) should be higher then 0? What am I missing?