Buttons inside Movieclip do not work

guys, I am stumbled upon this crazy problem.

I have 3 scenes in my fla.

intro
content
quiz

in the CONTENT scene I have on the frame 1 a movie clip INSIDE which I have placed a button
clicking which will supposed to bring me to the first frame of the scene

intro.

I have used the following code on the button

on(release) {
_root.intro.gotoAndPlay(1);
}

or

on(release) {
_root.gotoAndPlay(“intro”,1);
}

NEITHER worked,

when clikcing the timeframe rewinds to the first frame of the CONTENT scene.

Please help.

I have done the project, everything else works, tomorrow demonstration, and the movie clip I created is the gem of the presentation…

thank you