xmlel = CreateObject("roXmlElement")
xmlel.Parse(xml) ' should check return value
rndimg = xmlel.img[rnd(xmlel.img.Count())-1]
src = rndimg@src
alt = rndimg@alt
BrightScript Debugger> choice = rnd(xml.img.count()) - 1
BrightScript Debugger> ? choice, xml.img[choice]
2 <Component: roXMLElement>
BrightScript Debugger> ? xml.img[choice].genXML(0)
<img alt="Foligno Madonna, by Raphael" src="madonna3.jpg" />