onOpen/Close: addClass/removeClass doesn't work.

[samremonte]

I'm not sure why this isn't working. Need help from you guys. Thanks

(function($) {

	$(document).ready(function() {

		$('#burger-icon').sidr({
			name: 'sidr',
			side: 'right',
			speed: 500,
			source: '#sidr',
                        onOpen: function() {
                             $('#burger-icon').addClass('open');
			     $('.lock').addClass('on');
                        },
                        onClose: function() {
                             $('#burger-icon').removeClass('open');
			     $('.lock').removeClass('on');
                        }
		});

		$.sidr('open', 'sidr');
		setTimeout(function(){
			$.sidr('close', 'sidr');
		}, 1500);

	});

})( jQuery );