How store values in duplicated clips?

Hi,
I duplicate a MC 6 times,

for(i=1;i<=6;i++){
this.MovieClip.square.duplicateMovieClip( “square”+i,i*1000);
//
and now I want to store a unique number (i) in each of the duplicated movieclips
//

this.MovieClip[“square”+i].uniquenr = i;

}

this doesn’t work.

how do i get:
trace (this.MovieClip[square3].uniquenr)
-> results in 3
???

now it says nothing
:frowning:

thanks
Stanley