Variable code within code

Question

I was wondering how you can make variable code within code, for example, normally, you can use this["blabla"+variable]; to make the code say blablavariable.
But now i want to make new variables by using this code, within a for loop [using teller1 as the increasing value]
this["var ringsegment_mc:Ring_"+teller1+"=new [Ring_"+teller1+"]()"];
which i basically want to have say:
var ringsegment_mc:Ring_1=new Ring_1();
but this doesnt work, it doesnt make a variable called ringsegment_mc.
why I want to do this, is because i need to make an add child which makes 16 parts, from 16 different movieclips.
here is the code for that for loop:
for(var teller1=0; teller1<16; teller1++) {
    kernplaats += Number(Math.random()*200+300);
    this["var ringsegment_mc:Ring_"+teller1+"=new [Ring_"+teller1+"]()"];
    ringsegment_mc.x=xco[teller1]+kernplaats;
    ringsegment_mc.y=yco[teller1]+kernplaats;
    ringsegment_mc.geklikt = Number(0);
    ringsegment_mc.score = Number(ringscore);
    ringsegment_mc.speedmodded = Number(0);
    ringsegment_mc.kerngroep = Number(1);
    ringsegment_mc.addEventListener(Event.ENTER_FRAME,vernietig);
    addChild(ringsegment_mc);

Answer 1

Hmm, i already fixed it, though im still not really sure why it happened:
i have a for loop adding the addchilds 16 times, using a different movieclip for each instance
loading the x and y coordinates from an array, containing 16 values [which ive changed to 17 now, to make it work]
the arrays:
var xco:Array = [121,180,233,271,292,292,270,231,179,124,74,34,11,9,30,70,121];
var yco:Array = [11,11,33,73,124,181,232,270,290,291,271,234,183,125,72,33,11];
the part of the for loop and positioning:
for(var teller1=1; teller1<17; teller1++) {
    //var ringsegment_mc:Ring_1=new Ring_1();
    var ClassReference:Class = getDefinitionByName("Ring_"+teller1) as Class;
    var ringsegment_mc:MovieClip=new ClassReference();
    ringsegment_mc.x=xco[teller1]+kernplaatsx;
    ringsegment_mc.y=yco[teller1]+kernplaatsy;
i traced the x and y coordinates, and it appeared that Ring_16 got 0.0 as coordinates.
so i added the first coordinate to the end, and it works fine now.
and while typing i realise that the first value in an array is number 0 and not 1
DOH!
Thanks for the help guys!
Especially you, Hakan!