drag and drop need help actionscript 2

[kofa]

hello all
excuse me for my bad English

i have 9 squares and 9 circles




i need :
if i click square1 ===> drag any of circles and drop into square1 only after that:

1- stop drag and drop this circle

1- stop drag and drop into this square1

2- stop square1 press

and so on if i click square2 ===> drag any of circles and drop into square2 only and so on

What is the simplest code to do this

my code is :

on (press) {
if(timer >0){startDragLocked();

}


onSelfEvent (release,releaseOutside) {
   stopDrag();
   
} 

thanks for help