Multiple MovieClip through AS

Hi everyone, I am having trouble loading a movie clip through actionscript. I have 3 movie clips. One is "Circle_mc, Second "Square_mc adn the Third Rect_mc. I want to load each of the three through actionscript but be at different positions? I appreciate your help. I have searched but couldn’t find a thread like I needed.

Example:

onLoad()
Circle_mc.play()
this.Circle_mc_x=50;
this.Circle_mc_y=65;
//Load the Square Movice Clip
Square_mc.play()
this.Square_mc_x=80;
this.Square_mc_y=90;
//Load the Rect Movice Clip
Rect_mc.play()
this.Rect_mc_x=20;
this.Rect_mc_y=30;
Thanks