loadMovieNum - load ext. swf in NextHigherLevel

I am loading multiple external swf into a main swf (slides), but they collapse in the root.

This is the code I am using now

emty_mc.loadMovieNum(“gallery.swf”);

I used to have a code instead of using levels for each empty movie clip, something like

NextHigherLevel

that fixed the problem before, but I forgot how to use it.

Can somebody give me the right code to load multiple swf files without collapsing in the root, using NextHigherLevel?

Thanx in advance