if statement isnt working

Questions & Answers
1

Im trying to make a cube world and i am trying to check if the block above the current block is =0 or =1 but the if statement isnt working. Even if the block above is 1 it is still returning as if it is 0. I dont know what is wrong. Any suggestions on what i did wrong? Thanks

using UnityEngine;
using System.Collections;

public class DataScript : MonoBehaviour 
{
	public byte[ , , ] data;
	
	public int worldX = 10, worldY = 10, worldZ = 10;
	
	public GameObject block;
	
	void Start ()
	{
		data = new byte[worldX, worldY, worldZ];
		for (int x=0; x<worldX; x++)
		{
			for (int y=0; y<worldY; y++)
			{
				for (int z=0; z<worldZ; z++)
				{
					if (y<2)
					{
						data[x, y, z] = 1;
					}else{
						data[x, y, z] = 0;
					}
					
					if (data[x, y, z] == 1)
					{
						GameObject cube = Instantiate(block, new Vector3(x, y, z), Quaternion.identity) as GameObject;
					}
					
					if (y+1 < worldY)
					{
						if (data[x, y, z] != 0)
						{
							if (data[x, y+1, z] == 0) // This is the line that isnt working
							{
								print("Nothing Above");
							}
						}
					}
				}
			}
		}
	}
}
2

It is due to the fact that the voxel above has not been set yet.
You currently make a voxel at y=a but since your for loop is incremental loop, y=a+1 is not yet reached.