# Please Help

**URL:** <https://forum.kirupa.com/t/please-help/232902>\
**Category:** Uncategorized\
**Created:** [July 18, 2007, 5:37pm UTC](https://forum.kirupa.com/t/please-help/232902 "2007-07-18T17:37:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![alanmace](https://avatars.discourse-cdn.com/v4/letter/a/3e96dc/32.png) [@alanmace](https://forum.kirupa.com/u/alanmace)\
**Post date:** [July 18, 2007, 5:37pm UTC](https://forum.kirupa.com/t/please-help/232902/1 "2007-07-18T17:37:03Z")

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I’m just starting out on a very basic ActionScript self-study program. I’m doing an exercise from a book, and it doesn’t work the way it’s supposed to. Here’s the code:

```auto
var ball1Clip:MovieClip;
ball1Clip = _level0.createEmptyMovieClip("ball1_mc", 1);
var ball2Clip:MovieClip = myMC1.duplicateMovieClip("ball2_mc", 2);
ball1Clip._x = 100;
ball2Clip._x = 200;
trace(ball1Clip._x); // outputs: 100;
trace(ball2Clip._x); // SHOULD output: 200, instead returns: undefined

```

It’s supposed to create a copy of “ball1Clip”, rename it “ball2Clip”, move it to x 200 and then output their respective x coordinates. For some reason, it doesn’t and I’m pretty sure that I copied it verbatim from the book (I’m getting a little tired of looking at it). I found an error on the code right before this exercise (it told me to write “trace(ball1.\_x)” instead of “trace(ball1Clip.\_x)”) so I’m getting worried that this book wasn’t proofed as well as it should have been. I really don’t want to keep moving forward until I’ve resolved this. Can anyone point out what’s wrong?

EDIT: Never mind, found the publisher’s errata page for this book. instead of “myMC1” it should be “ball1Clip”, which makes more sense.