Jagged lists not being set in method

Jagged lists not being set in method

Why don't the two jagged lists of Map class get set? map.row and map.cols
are showing to have values such as 4 and 5 in the Visual Studio debugger.
Do i need these classes to be in a namespace?
Any help appreciated. Thanks!
Whole Map class
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
public class Map
{
public Map()
{
}
public int rows { get; set; }
public int cols { get; set; }
public int boardXPos { get; set; }
public int boardYPos { get; set; }
public int squareSize { get; set; }
private List<List<int>> m_cellPositions = new List<List<int>>();
public List<List<int>> cellPositions
{
get
{
return m_cellPositions;
}
set
{
m_cellPositions = value;
}
}
private List<List<int>> m_cellWalls = new List<List<int>>();
public List<List<int>> cellWalls
{
get
{
return m_cellWalls;
}
set
{
m_cellWalls = value;
}
}
}
Start of MapController Class
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
public class MapController
{
public MapController()
{
}
Map map = new Map();
Method to set map.cellWalls
public void defineCellWallsList()
{
//map.cellWalls.Clear();
for (int row = 0; row < (map.rows * map.cols); row++)
{
map.cellWalls.Add(new List<int> { 0, 0 });
}
}
Method to set map.cellPositions
public void defineCellPositionsList()
{
//map.cellPositions.Clear();
for (int row = 0; row < map.rows; row++)
{
for (int col = 0; col < map.cols; col++)
{
map.cellPositions.Add(new List<int> { col, row });
}
}
}