How 2 link from 1 swf file to another?

i have created 2 swf files… (eg; a.swf and b.swf)
if i 1 2 link from a.swf to b.swf, i use this AS : ( this As works)

on (release) {
tellTarget ("_root") {
gotoAndStop(1);
loadMovieNum(“b.swf”, 1);
}
}

lets say if a.swf have 3 scenes in it, (scene1, scene2, scene3), and i 1 2 link b.swf back to the ‘scene3, frame1’ of a.swf, what will the AS be?

i tried using this:

on (release) {
tellTarget ("_root") {
gotoAndStop(1);
loadMovieNum(“a.swf”, “scene3”,1);
}
}

but it has and error…

can u tell me the correct AS to link it back?