XML : How to using merge my xml file and 'UpperBody' model from vision.CascadeObjectDetector in matlabM

This is my coding that I can't merge my model and UpperBody. Help me please.

% Create a detector object and set properties

bodyDetector = vision.CascadeObjectDetector(merge('D:\tools\test_recognition\output.xml', 'UpperBody'));

% Read input image and detect upper body

for i=1:5 pic{i} = imread(sprintf('c%d.bmp',i));

bboxBody = step(bodyDetector, pic{i});

bb = bboxBody;

% Annotate detected upper bodies

IBody = insertObjectAnnotation(pic{i}, 'rectangle',bboxBody,'Upper Body');

figure, imshow(IBody)

disp(bb);

end