Adding multiple different movieclips with AS

1

Hi i have this problem:

Basically i want to go from this:

function SomeFunction():void
{
var mc1:Mc1 = new Mc1();
addChild(mc1);
mc1.x = 100;
mc1.y = 100;

var mc2:Mc2 = new Mc2();
addChild(mc2);
mc2.x = 100;
mc2.y = 100;

var mc3:Mc2 = new Mc3();
addChild(mc3);
mc3.x = 150;
mc3.y = 150;

var mc4:Mc4 = new Mc4();
addChild(mc4);
mc4.x = 200;
mc4.y = 200;

etc…
etc…

to Something like this:

for (i:int = 0; i < 7; i++)
{
var mc**i**:Mc**i** = new Mc**i**();
addChild(mc**i**);
mc**i**.x = 100 + i * 50;
mc**i**.y = 100 + i * 50;

}

I have been trying for some time to make something like this work but i just can’t seem to do it properly.

And also all the movieClips are different NOT 7 instances of the same movieClip