What a nice picture and a great event for you to shoot and to cherish. How long with each flower hold its state of bloom. Is there more than one flower spike to your plant? After "Googling" the name, I realize that it is similar to what we in america call "String of Hearts". I have had recently that plant and it is not that common to see the flowering, but once it finds the right combination of light and the other growing conditions, it should bloom with regularity and for a while and many of the "Axilae".http://www.google.com/imgres?q=ceropegia+woodii&hl=en&sa=X&tbo=d&biw=1205&bih=612&tbm=isch&tbnid=jKWbwLfOsmMTyM:&imgrefurl=http://www.flickr.com/groups/stapeliads/pool/with/2926722575/lightbox/&docid=GVZ2cmwi1avXrM&imgurl=http://farm4.staticflickr.com/3084/2898638959_35c19fd0ba.jpg&w=500&h=375&ei=Q8SqUOiWNYrPigKcv4HwDQ&zoom=1&iact=hc&vpx=190&vpy=270&dur=427&hovh=194&hovw=259&tx=125&ty=102&sig=105043452336670889653&page=3&tbnh=141&tbnw=186&start=57&ndsp=29&ved=1t:429,r:66,s:0,i:289