flex - localToGlobal not working - for reals though -

i know there bajillion threads on topic, , maybe retarded, isn't working , think missing key?

lets have sprites _testtarget , _testparent nested this.

_testparent = new sprite(); this.addchild(_testparent);  _testtarget = new sprite() _testparent.addchild(_testparent); 

and lets want global cords of _testtarget. when localtoglobal 0,0 when know fact actual cords 200,100

var point:point = new point(_testtarget.x, _testtarget.y);     point = _testtarget.localtoglobal(point);  // returns 0,0  var point:point = new point(_testtarget.x, _testtarget.y);     point = _testtarget.parent.localtoglobal(point);  // returns 0,0  var point:point = new point(this.x, this.y);     point = this.localtoglobal(point);  // returns 0,0  var point:point = new point(this.x, this.y);     point = this.parent.localtoglobal(point);  // breaks, "parent" null 

if helps, class/sprite instantiated inside of sprite, inside of sprite, inside of sprite...etc , reason cords 200,100 because 1 of parent containers set - thought localtoglobal supposed go way top layer? help?

you must have problem somewhere else (i can't see in code pasted, except 1 mentioned tandemadam).

this works expected:

var _testparent:sprite; var _testtarget:sprite; var _yetanotherparent:sprite;  _yetanotherparent = new sprite(); this.addchild(_yetanotherparent);  _testparent = new sprite(); _yetanotherparent.addchild(_testparent);  _testtarget = new sprite() _testparent.addchild(_testtarget);  _testparent.y = 100; _yetanotherparent.y = -500;  var point:point = new point(_testtarget.x, _testtarget.y);     point = _testtarget.parent.localtoglobal(point);    trace(point); // (x=0, y=-400) 

as rule of thumb, when translating between coordinate spaces, object on want call localtoglobal or globaltolocal parent of object you're interested in, because object's x , y offsets relative parent.