Problem with some dynamic generated movieclips

programming flash
1

basically i have to generate some movieclips dynamically and then eidt their content…

for(j=4;j>=0; j--){
var mc = _root.bottom.panel.duplicateMovieClip("copy"+j, j);
if (j===(4)) {posit=50;
	mc._x=50}
	else {
	posit+=250;
	mc._x=posit;} }

this is what i use to generate them… it works, no problem

now… inside the panel movieclip that i duplicate there is another movieclip, named company that i want to animate etc…

so, if i try to make the clip become invisible in the generated clips, i used thsi script

for(j=4;j>=0; j--){
	nume="copy"+j;
_root.bottom.nume.company._visible=false; }

which obviously didn not work, because instead of trying to make _root.bottom.copy1.company invisible, it looks for the “nume” clip in the bottom movieclip…

what can i do to solve this problem? i have no idea of how i can acces the generated clips… i tried _root.bottom.(“copy”+j).company._visible=false; and does not work…