stop sound playback on close of symbol

I am trying to stop a sound on a close button.

I can get .pause to work - but .stop does'nt work at all.

( i want it so if somebody closed a symbol and then reopens it - it will start from the beginning.

This is the code i am using on my close button:

var audio1 = sym.getVariable("audio1");

audio1.stop();

sym.getSymbolElement().hide();