Invalid rank specifier error

When I build this script, an error occured. I try to solve it myself, but I can't. please help me.

using UnityEngine;
using System.Collections;

public class Game : MonoBehaviour {
byte[] tilePosX;
byte[] tilePosY;
byte[] tilePosZ;
int tileTotalNumber;
int layoutRowsX,layoutRowsY,layoutRowsZ;
int[][][] tileLayoutIndex;
int[] layoutZStart;
int[] layoutZStop;

 void Start () {
     
 }
 
 void Update () {
 
 }
 
 void loadlayout(int level)
 {
     TextAsset ta = Resources.Load("lev.lay", typeof(TextAsset)) as TextAsset;
     byte[] bytes = ta.bytes;
     int offPart1 = bytes[2*level];
     int offPart2 = bytes[2*level+1];
     if(offPart2 < 0){
         offPart2 += 256;
     }
     int offset = offPart2|(offPart1<<8);
     tileTotalNumber = bytes[offset+0]+128;
     layoutRowsX = bytes[offset+1];
     layoutRowsY = bytes[offset+2];
     layoutRowsZ = bytes[offset+3];
     tilePosX = new byte[tileTotalNumber];
     tilePosY = new byte[tileTotalNumber];
     tilePosZ = new byte[tileTotalNumber];
     for(int i= 0; i < layoutRowsX; i++)
     {
         tileLayoutIndex[i] = new int[][layoutRowsY]; --> Invalid rank specifier: expect-
         -ed ',' or ']' . Array creation must have array size or array initializer.
 
         for(int j = 0; j < layoutRowsY; j++)
             tileLayoutIndex[i][j] = new int[layoutRowsZ];
     }
     for(int x=0; x<layoutRowsX; x++){
         for(int y=0; y<layoutRowsY; y++){
             for(int z=0; z<layoutRowsZ; z++){
                 tileLayoutIndex[x][y][z] = -1;
             }
         }
     }
     for(int i=0; i<tileTotalNumber; i++){
         tilePosX[i] = bytes[offset+4+i*3];
         tilePosY[i] = bytes[offset+4+i*3+1];
         tilePosZ[i] = bytes[offset+4+i*3+2];
         tileLayoutIndex[tilePosX[i]][tilePosY[i]][tilePosZ[i]] = i;
     }
     layoutZStart = new int[layoutRowsZ];
     layoutZStop = new int[layoutRowsZ];
     int tempZIndex = 0;
     for(int i=0; i<tileTotalNumber; i++){
         if(tilePosZ[i] != tempZIndex){
             layoutZStart[tilePosZ[i]] = i;
             layoutZStop[tilePosZ[i]-1] = i-1;
             tempZIndex = tilePosZ[i];
         }
     }
     layoutZStart[0] = 0;
     layoutZStop[layoutRowsZ-1] = tileTotalNumber-1;
     bytes = null;
 }

}