Dissolving into another photo

programming flash
1

I am just wondering how I can make the following code dissolve into another photo? Thanks in advance.


// the dissolve effect
import mx.transitions.*;
import mx.transitions.easing.*;

var dissolving = {
	type: PixelDissolve,
	direction: 1,
	duration: 2,
	xSections: 60,
	ySections: 40,
	easing: Regular.easeInOut,
	numStrips: 20,
	dimension: 1
};

TransitionManager.start(photo_1, dissolving);
photo_1.onMotionChanged = function() {
	
};