How to arrange this XML?

Hallo,

I’ve an assignment and need help, i should make XML file which loads Electrons into Flash file in certin levels,first i draw the Electrons in Actionscript 3.0,but I don’t know how to do it. I think i should specify X and Y position in XML, but the problem is that i have to make a input text for the user to put values to change the Electrons position for example : first level greater than 10 the Electrom moves into Level 2 and so on.

Any help how to do it will be appreciated