Btn problem

Hello all, I got this button and it came with this actionscript to play a rollOver effect. It was no linked to anything. I want to make it gotoAndPlay a frame in the same timeline. How do I do this?

on (rollOver) {
this.gotoAndPlay(“mc_1”);
}
on (releaseOutside, rollOut) {
this.gotoAndPlay(_totalframes-_currentframe);
}

I’ve tried this and didn’t work.

onRelease.gotoAndPlay(7) or something to that nature… obviously wasn’t working