How to hide the balloon (label) on the map when clicked?

Question

Yandex maps

Friends, how to hide the baloon (label) on the map?
yandex map 2.1
map:
var map = new ymaps.Map("map", {...
note, there is a button:
<a id="btn_click" href="#">test</a>
and a variable with a label var cord = 56.023585, 92.775029;
the label is already displayed on the map, as when clicking on the button btn_click, hide (remove) the label cord from the map, there is a par.-r setOptions('visible'... but I don't know how to use it!

$('body').on('click', '#btn_click', function() {
var cord = 56.023585, 92.775029;


});

do not advise documentation, too much information, no time!
I would be very grateful for any answer!