How flash can remember the hit state of buittons

Question

How can you use a cookie- flash shared object to remeber the
hit state of a flash button.
example: the button is red, once clicked it goes green.-
stop. when the page is refreshed all the buttons go back to red but
i want them to stay green.
CODE BEING USED: Note: timer 15seconds for testing:
on (press) {
var currentDate:Date = new Date();
var so:SharedObject = SharedObject.getLocal("tank");
if(so.data.name != undefined){
trace("the cookie already exists");
gotoAndStop(2);
trace("The expiry date of the cookie is: " +
so.data.expirydate);
if(currentDate > so.data.expirydate){
trace("delete the shared object");
so.clear();
}else{
trace("set the cookie");
so.data.name = "tank2";
so.data.expirydate = new
Date(currentDate.getTime()+1500000);
trace("The expiry date of the cookie has been set to : " +
so.data.expirydate);
WHERE IT SAYS: GOTOANDSTOP (2), WHAT I WANT IS IT TO GO TO
THE HIT FRAME WITHIN THE BUTTON.
NOT EVEN SURE THIS WILL WORK SO ANY COMMENTS MUCH
APPRECIATED!!
THANKS ALL

Answer 1

Sorry i was very wrong, still having problems any ideas???
anyone!
followed guide:
http://board.flashkit.com/board/showthread.php?t=725302&highlight=shared+object+expiry
but still running into issues. can anyone explain it to a
child (me)