CS5 AS2 loadMovieNum help

Hi this is my first Flash project that I am doing for my uni course.

I am doing a 5 frame file that on frame 1 has 4 buttons and the
following code

on (release) {
gotoAndStop(4);
}
on (release) {
loadMovieNum(“jigsaw.swf”, 1);
}

im happy with this as it jumps to frame 4 and loads the movie jigsaw that I done from a tutorial. the problem is I cant get it to close, I have got a
button on page 4 that has the gotoAndStop(1) but it just goes to frame 1 (thats the good bit) but the jigsaw is now on frame 1 as well and I dont know how to close it.
I tried
on (release) {
gotoAndStop(1);
}
on (release){
unloadMovieNum(“jigsaw.swf”, 1);
}
but it does nothing not even go to frame 1 :-/

Like I said this is my first attempt at flash and understand im prob being a total NooB but really would love some advice/help