Insert values in an array (within a function)

Question

Hello,
I can't seem to get values insert in an array. I know it
works outsite the function but
when using variables in a function and trying to insert this
in an array it does not work.
The values are empty.
But if you uncomment the line someArray.push(a0,a1,a2) and
uncommend the for loop it works.
In actionscript 2.0 i could use eval ..but in actionscript
3.0 you have to use this to convert a string to a value.
Does anyone see, what i am doing wrong?
function doSomething() {
var a0:String = "hello";
var a1:String = "why doesn't it";
var a2:String = "work!";
var someArray:Array = new Array();
//someArray.push(a0,a1,a2);
for (var i:uint =0; i<=3; i++) {
someArray.push(this["a"+i]);
trace(someArray);
doSomething();

Answer 1

In this case, the problem arises from a scope issue. The vars
are defined within the function so they are visible only within the
function. When you use "this" you are referencing the object that
contains the function, which cannot see those vars (they do not
exist for "this", only for the function). It works if you go this
way...
var a0:String = "hello";
var a1:String = "why doesn't it";
var a2:String = "work!";
function doSomething() {
var someArray:Array = new Array();
for (var i:uint=0; i<3; i++) {
someArray.push(this["a"+i]);
trace(someArray);
doSomething();
The other line: someArray.push(a0,a1,a2);
does work because it is within the function and can see the
vars.