Positioning clips on stage with XML

I’m using an XML ticker to display testimonials from my customers, who are scattered all over the west to from WA to AZ. I also display a map next to this dynamic text area. I want to show a small clip on the map (like an animated map pin) to coincide with each tick of the text. You know, to show where the customer is located. Then disappear until the next testimonial comes up. Seems that assigning variables (_x,_y) in the XML is the way to do it, but don’t know how. Newbie, please make this simple.