How to Get Area value in the Message box or Helpdlg box

I am segmenting some images and calculating the area of the segmented region. Area=7337 (for example).

Now the question is How to display this area value in a Message box or helpdlg box. The thing what i tried was

z=seg;
imshow(z);
area = regionprops(z , 'Area')
h=msgbox('Area Calculated',area);

where seg is my segmented region.