Loading swfs into containers

1

I’ve been trying the tutorial for loading external swfs, with the following code:

but.onPress = function () {
_root.createEmptyMovieClip(“container”, 1);
loadMovie(“loaded.swf”, “container”);
container._x = 150 ;
container._y = 20 ;
}

But it just doesn’t work. The button ‘but’ has an ‘onrelease’ action–is this affecting the loading?