Adding a mask for a sprite

Question

I am having trouble adding a mask for a sprite, here is the
reason why:
After adding everything in the currect display list (i would
hope it is), the mask area for the sprite is bkack and covers it
rather than showing the content, and everywhere else the mask is
not located, the sprite shows. It seems to be showing the opposite
of what it should. If I do not use the mask, the sprites will not
show or exist at all, and with it they appear, similar with using
just a filled movieclip within the "other" sprite.
Here are the conditions:
I made a sprite with a given size and location (call it the
main sprite). Then I added two sprites to that main sprite, and one
of those two was the mask for the other. After that for the "other"
sprite within the main, i made a for loop and filled it some with
textfields using a database. Then, filled the mask sprite with
color. Also, the main sprite was sized the same as the mask sprite
so they are identical.
var mainSprite:Sprite = new Sprite();
var maskSprite = new Sprite();
var otherSprite = new Sprite();
mainSprite.addChild(maskSprite());
mainSprite.addChild(otherSprite());
otherSprite.mask = maskSprite;
for (conditions here) {
//textfields randomly entered here to the other sprite
within conditions, etc.
maskSprite.graphics.beginFill(0xFF0000);
maskSprite.graphics.drawRect(0, 241, 530, 141);
addChild(mainSprite);
Note: I am using AS3

Answer 1

Nevermind, i am just using movieclip object with a sprite as
it's mask. Works fine.