Help with an Array

Hello,
I am writing a script to shift the MC’s in my movie to the right and down when I run a PrintJob(since it left justifies everything). I have created an array with all my MC’s and then I am looping through and adding 40 to the _x and _y values. Problem is it is not working because when I loop through “shiftPrintClips*._x” comes out as undefined when I trace it. Any idea why? I can trace “shiftPrintClips*” and the value of the MC shows fine, just not when I try to get the location. (it works when I hard code the MC name):h:
Thanks!!

Here’s the code:

[COLOR=red]var shiftPrintClips:Array = [“top_mc”, “audio_onoff_mc”, “heading_txt”, “indexName_mc”, “narration_mc”, “mediaControlOutlines_mc”, “pageNumber_mc”, “glossary_mc”, “presentation_mask_mc”, “back_mc”, “glossary_btn”, “index_read_mc”, “print_button”, “print_btn”, “next_mc”];[/COLOR]
[COLOR=red]f[/COLOR]
[COLOR=red]or (i=0; i<shiftPrintClips.length; i++) {
shiftPrintClips*._x = shiftPrintClips*._x + 40;
shiftPrintClips*._y = shiftPrintClips*._y + 40;
trace(top_mc._x);
trace(shiftPrintClips*);
}[/COLOR]