can you set tween duration with actionscript

I was wondering if your using the following method to apply the tween:

import com.jumpeye.flashEff.symbol.alpha.FESAlpha;

var myPattern:FESAlpha = new FESAlpha();
var myEffect:FlashEff = new FlashEff();
myEffect.showTransition = myPattern;
myEffect.showDelay = 0;
myEffect.showAutoPlay = false;
this.addChild(myEffect);
myEffect._targetInstanceName = "myClip";

myClip.addEventListener(MouseEvent.CLICK, clikHandler);

function clikHandler(evt:MouseEvent):void {
myEffect.show();
}

Is there a way to set some of the other properties such as the tweenDuration with actionscript?

thanks for you help!

The answer to your question is found in this post: http://www.flasheff.com/forum/read.php?23,393,393#msg-393.