Guru needed: Movieclip "instance" problem

programming flash
1

Hello

I have 2 Movieclips called Clip1 and Clip2


Clip1._x=5;
Clip1._y=6;
Clip2=Clip1;

Clip2._x -> 5
Clip2._y -> 6

Then I change values in Clip2


Clip2._x=50;
Clip2._y=60;

Clip1._x ->50
Clip1._y -> 60
Clip2._x ->50
Clip2._y -> 60

I think both objects share the same memory space. How can I give Clip2 the values of Clip1 and then when I change Clip2 not change Clip1 at the same time? :-/