Dynamic MovieClip Names

Ok, im just making the switch over to AS3.

ive tried to search, but can’t find the results (im not even sure what this is called)

how do i convert the following into AS3? Specifically the main[“b” + i]. My buttons are called b1, b2, b3 etc, and i could loop an action to them in AS2 by using the following loop. Doesn’t seem to work now.

var main:MovieClip = this
var i:int;
for (i=1; i<=8; i++)
main[“b” + i].addEventListener (MouseEvent.MOUSE_DOWN, bRelease);