[FMX2004]initObject in duplicateMovieClip?

How do you use that??? I’d like to duplicate a MC and give it dynamicly a position but i don’t know how to tell that to flash…
I’m using that code :

[AS]

onClipEvent(load){
for(i=0; i = nb_titre; i++){
_root.bande.duplicateMovieClip(“bande” + i, i, …)}}

[/AS]

thanks in advance