Best way to create 2D tiled sprite. (UnityScript)

I've created a modified version of this answer here using UnityScript on how to make a 2D tiled sprite. http://answers.unity3d.com/questions/599263/how-to-make-2d-sprite-tiled.html

 // using UnityEngine;
 // using System.Collections;
 
 #pragma strict
 
 public var gridX : float = 0.0f;
 public var gridY : float = 0.0f;
 
 var sprite : SpriteRenderer;
 
 function Awake () {
 
     sprite = GetComponent.<SpriteRenderer>();
     // if(!GetSpriteAlignment(gameObject).Equals(SpriteAlignment.TopRight)){
     //     Debug.LogError("You forgot change the sprite pivot to Top Right.");
     // }
     var spriteSize_wu : Vector2 = new Vector2(sprite.bounds.size.x / transform.localScale.x, sprite.bounds.size.y / transform.localScale.y);
     var scale : Vector3 = new Vector3(1.0f, 1.0f, 1.0f);
 
     if (0.0f != gridX) {
         var width_wu : float = sprite.bounds.size.x / gridX;
         scale.x = width_wu / spriteSize_wu.x;
         spriteSize_wu.x = width_wu;
     }
 
     if (0.0f != gridY) {
         var height_wu : float = sprite.bounds.size.y / gridY;
         scale.y = height_wu / spriteSize_wu.y;
         spriteSize_wu.y = height_wu;
     }
 
     var childPrefab : GameObject = new GameObject();
 
     var childSprite : SpriteRenderer = childPrefab.AddComponent.<SpriteRenderer>();
     childPrefab.transform.position = transform.position;
     childSprite.sprite = sprite.sprite;
 
     var child : GameObject ;
     var h : int = Mathf.Round(sprite.bounds.size.y);
 
     for (var i : int = 0; i*spriteSize_wu.y < h; i++) {
 
         var w : int = Mathf.Round(sprite.bounds.size.x);
 
         for (var j : int = 0; j*spriteSize_wu.x < w; j++) {
             child = Instantiate(childPrefab) as GameObject;
             child.transform.position = transform.position - (new Vector3(spriteSize_wu.x*j, spriteSize_wu.y*i, 0));
             child.transform.localScale = scale;
             child.transform.parent = transform;
         }
 
     }
 
     Destroy(childPrefab);
     sprite.enabled = false; // Disable this SpriteRenderer and let the prefab children render themselves
 
 }
 

I'm not the best at doing this and am still very new to Unity, so it's working but with one caveat: It's creating two rows of these tiles instead of one:

I'm basically trying to generate portions of the platformer to avoid having to duplicate a gameobject over and over manually.

So, am I not understanding quite what is being done with the code, or am I missing something? It's not a deal breaker, and with the camera I am using I'm sure I could find a work around, but I'm hoping someone will point out my mistakes and aid me in the right direction. :)

UPDATE OCT 29

The code above works perfectly for creating a 2D tilemap as statement pointed below and here is the adjustment if you want basically use this on only one row:

 var child : GameObject ;
     var w : int = Mathf.Round(sprite.bounds.size.x);
 
     for (var j : int = 0; j*spriteSize_wu.x < w; j++) {
         child = Instantiate(childPrefab) as GameObject;
         child.transform.position = transform.position - (new Vector3(spriteSize_wu.x*j, 0, 0));
         child.transform.localScale = scale;
         child.transform.parent = transform;
     }