Defining height & width values of a movie clip with XML file!

[LEFT][COLOR=#333333][FONT=adobe-clean]How can I specify height and width values of a movie clip using external XML file? User needs to change values of a particular movie clip [rectangular shape] using xml file.
[/FONT][/COLOR][COLOR=#333333][FONT=adobe-clean]
[/FONT][/COLOR][COLOR=#333333][FONT=adobe-clean]How can I do that?[/FONT][/COLOR][COLOR=#333333][FONT=adobe-clean]
[/FONT][/COLOR][COLOR=#333333][FONT=adobe-clean]Thanks.[/FONT][/COLOR][/LEFT]