Grid Unity

    private Vector3[,] spawnGrid = new Vector3[3, 4];

    void SpawnGrid()
    {
        for (int i = 0; i < 3; i++)
        {
            for (int j = 0; j < 4; j++)
            {
                spawnGrid[i, j] = new Vector3(x, 0f, z);
                GUI.Box(new Rect(10,10,300,300),spawnGrid[i,j].ToString());
                z -= 1;
            }

            x += 1;
            z = 1.5f; //gives original value back to Z.
        }
    }