Help with camera angles?

I have an assingment that I am taking a 2d maze and making it 3d. I am trying to change the camera angle so that it makes it look like I am in the maze. This is what I have but I dont know where I went wrong. I have attached a pciture of what view i am trying to getting in the maze.

function [maze_figure, maze_axes] = drawMaze3d(maze)

    % prepare figure and axes
    maze_figure = figure;
    maze_axes = axes;
    axis equal;
    hold on;
    title('this will become the 3d maze')

    % set axis properties depending on maze size
    axis([0 maze.number_of_columns 0 maze.number_of_rows+2]);
    set(gca, 'xlim', [0 maze.number_of_columns], 'ylim', [2 maze.number_of_rows+2], 'xtick', [], 'ytick', []);
    set(gca, 'xtick', [], 'ytick', [], 'ztick', []);

camva(maze_axes,'manual')  % CameraViewingAngleMode
campos(maze_axes,'manual') % CameraPositonMode
set(maze_axes,'CameraTargetMode','manual', 'Projection','perspective','CameraViewAngle',90)
% ----------------------------------------------------------------------------------------------------------------------
% remove this line and specify camera properties of the maze_axes here for (b)
% ----------------------------------------------------------------------------------------------------------------------
    
%floor 
  patch([0,maze.number_of_columns,maze.number_of_columns,0],[2,2,maze.number_of_columns+2,maze.number_of_columns+2],[0,0,0,0],[.7,.7,.7]);

  % draw the grid
    for i_col = 1:maze.number_of_columns
       for i_row = 1:maze.number_of_rows
            % draw the northern wall
            if maze.hasWall(i_row, i_col, 1)
                drawWallNorth(maze, i_row, i_col);
            end

            % draw the eastern wall
            if maze.hasWall(i_row, i_col, 2)
                drawWallEast(maze, i_row, i_col);
            end

            % draw the southern wall
            if maze.hasWall(i_row, i_col, 3)
                drawWallSouth(maze, i_row, i_col);
            end

            % draw the western wall
            if maze.hasWall(i_row, i_col, 4)
                drawWallWest(maze, i_row, i_col);
            end
       end
    end
end

% nested functions
function drawWallNorth(maze, row, column)
    x1 = column-1;
    x2 = column;
    y1 = maze.number_of_rows - row + 3;
    y2 = maze.number_of_rows - row + 3;
    patch([x1,x2,x2,x1],[y1,y2,y2,y1],[0,0,1,1],'r'); 
    %plot([x1, x2], [y1, y2], 'k', 'linewidth', 4);
end

function drawWallEast(maze, row, column)
    x1 = column;
    x2 = column;
    y1 = maze.number_of_rows - row + 3;
    y2 = maze.number_of_rows - row + 2;
    patch([x1,x2,x2,x1],[y1,y2,y2,y1],[0,0,1,1],'g');
    %plot([x1, x2], [y1, y2], 'k', 'linewidth', 4);
end

function drawWallSouth(maze, row, column)
    x1 = column-1;
    x2 = column;
    y1 = maze.number_of_rows - row + 2;
    y2 = maze.number_of_rows - row + 2;
    patch([x1,x2,x2,x1],[y1,y2,y2,y1],[0,0,1,1],'b'); 
    %plot([x1, x2], [y1, y2], 'k', 'linewidth', 4);
end

function drawWallWest(maze, row, column)
    x1 = column-1;
    x2 = column-1;
    y1 = maze.number_of_rows - row + 3;
    y2 = maze.number_of_rows - row + 2;
    patch([x1,x2,x2,x1],[y1,y2,y2,y1],[0,0,1,1],'Yellow'); 
   % plot([x1, x2], [y1, y2], 'k', 'linewidth', 4);
end


function setRobotView(robot_location, robot_heading, axes3d)
camera_positon = [robot_location(1), robot_location(2),0.5];
axes3d.Cameraposition = camera_positon;
view_target = camera_positon;

if robot_heading == 1 
    view_target(2) = view_target(2) + 1; 
elseif robot_heading == 2 
    view_target(1) = view_target(1) + 1;
elseif robot_heading == 3 
    view_target (2) = view_target(2) - 1;
elseif robot_heading == 4 
    view_target(1) = view_target(1) - 1;
end 

axes3d.CameraTarget = view_target; 

end