How to make dom element events in template active?

Question

JavaScript

Good afternoon. Created a label with a template

var infoContentLayout = ymaps.templateLayoutFactory.createClass('<div class="content" id="contentgrid" onclick="showMatrix()">Тыкни сюда!</div>');

var marker = new ymaps.Placemark([data.location.latitude, data.location.longitude],

        {    hintContent: false    },        {

            iconOffset: [30, -200],

            iconLayout: infoContentLayout

});

    mapObj.geoObjects.add(marker);

The label with the template renders, everything is displayed normally, the question is how to make the showMatrix () function active?

Or tell me the right direction, I think you understand what I want