Why does moving a bone symbol with .x = newx only moves the root bitmap ??

Hi !

I've started using bones to animate a toon like character with a very simple armature.

This toon was created inside a MovieClip Symbol, which I can instantiate in my scene etc.

I can call start/stopDrag() and everything works fine.

But, when I try to move it by program (once the drag is finished, I need to "snap" it or move

it myself) the only thing that moves is the torso, which is the root bone's bitmap.

I do something like :

myToon.x = newx;

myToon.y = newy;

I tried using a transform matrix but I get the same result...

I don't understand what is happening there. Should I inject a motionTween on the root bone ?

here's what it looks like :

my toon Symbol with armature :

I imported a bitmap, lasso'd each part (why no rectangular selection tool ? beats me) and converted them to Symbols. Then I built the armature.

Using it as a symbol works fine with things like adding to the scene, dragging etc.

But as soon as I want to move it myself by program, this happens :

thanks for your help !

(PS moved from general to AS3).