ActionScript 1/2 :: Revisiting: Referencing A MovieClip Using A Variable?

Jun 15, 2009

This is a problem I thought I understood and was addressed in a previous thread [URL] but I have a new situation where the old solution isn't working.I have 3 instances on a "nested" movie clip. Their instance names are: b1, b2, and b3. When I trace these movieclips from the main timeline, I get:
 
trace(b1); // result = _level0.slide_mc.newMC.b1
trace(b2); // result = _level0.slide_mc.newMC.b2
trace(b2); // result = _level0.slide_mc.newMC.b3
 
From the main timeline, I want to fade up these movieclips using tween, but I need to do this by building the instance name in a variable:

var myInstance:String = "slide_mc.newMC.b"+ instanceNumber //(instanceNumber is equal to 1, 2, or 3)
 
Now, I thought using the variable in this manner would work:

new Tween (this[myInstance], "_alpha", None.easeNone, 0, 100, .5, true);

...but it doesn't.
 
I've checked trying to use the actual movie clip instance:

new Tween (this.slide_mc.newMC.b1, "_alpha", None.easeNone, 0, 100, .5, true);
 
...and it works fine.

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