Tweening a blur using script

I need to unblur an image over time. It doesn't seem you can get it done using Animate's filter feature, so I've looked into doing it via script and CreateJS commands.

I'm probably doing something wrong, but here below is a simple piece of code I've tried - it doesn't work though: the image is blurred and remains blurred, nothing is happening. 

var blurFilter = new createjs.BlurFilter(5, 5, 1);
this.myimage.filters = [blurFilter];

createjs.Tween.get(this.myimage.filters)
.wait(150)
.to({blurX:0,blurY:0}, 500, createjs.Ease.cubicInOut);