Timer/countdown clock help

1

sup guys i gotta clock that goes from 60seconds-0seconds
thats the code it works fine
but i cant find out how to make it go to the next scene when it hits zero i tried code 2 but it doesnt work

//CODE1
counter = 60;
setInterval(countDown, 1000);
function countDown() {
counter–;

//CODE2
counter = 60;
setInterval(countDown, 1000);
function countDown() {
counter–;
if (counter=0) {
gotoAndStop(“level2info”);