Create a Images Sitemap from Vm products

[luiskar]

I'm using xmap in joomla 3.3 and vm 3 but only allow to create the products and categories url, not the images. Any form to do that. I saw this articule:
https://www.google.es/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&uact=8&ved=0CCIQFjAA&url=http%3A%2F%2Fwww.leewillis.co.uk%2Fvirtuemart-product-images sitemap%2F&ei=SPMSVdujEpXmaqSRgrAP&usg=AFQjCNGp6cHERJaGn8B7pvxQFPu5UkJKiQ&bvm=bv.89184060,d.d2s

But its out-date. Any ideas?