Tween class trouble

I don't use Tween class often, so don't scold me if this is
an obvious question.
When I set up a simple Tween, it works if I assign a specific
object's instance name as the object to tween. But when doing it
inside a for loop, it doesn't work. Yet everything else within the
for loop works. I've tested every variable, and it's the object
name that doesn't work. Here is a simplified version of the code.
Someone please tell me what I've done wrong.

Walter,
> When I set up a simple Tween, it works if I assign a
specific
> object's instance name as the object to tween. But when
> doing it inside a for loop, it doesn't work.
Interesting. Honestly, your code looks fine. I just
copy/pasted,
literally, and it worked as expected.
I did notice one parameter that might cause some confusion.
In this
line:
var letterUp:Tween = new Tween(this, "_x", Bounce.easeOut,
this._x,
this.startX, 2000);
... that last parameter, 2000, means the tween will progress
*very* slowly,
as it will transpire over the duration of 2000 frames. In a
standard 12dps
movie, the full tween would take over 166 seconds. I'm
wondering if you
meant 2000 in terms of milliseconds? For that, you could drop
it to 2, and
add one more parameter, true, to indicate you want the tween
to transpire in
terms of seconds (true), rather than frames.
David Stiller
Adobe Community Expert
Dev blog,
http://www.quip.net/blog/
"Luck is the residue of good design."

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