Actionscript 3.0 :: Access Property X Of An Object Inside An Array?

I've created a card (that extends movieclip) in flash and after that I've created an array and pushed some cards inside of it. The name of the mcs is already set, but now, I want to add them to the stage and set their x and y position.

Code: Select allvar test:Array = new Array();
var testMC1:Card = new Card();
var testMC2:Card = new Card();

[Code].....

How can I access the property x of this card? The next code is wrong, of course, but it gives the idea of what I need...

Code: Select alltest[1].x = 100
// or
test[card3.x] = 100;