Display vertical scroll-bar for jqxInput in jQWidgets

Display vertical scroll-bar for jqxInput in jQWidgets

I am using bootstrap theme:

        $('#CompNameInput').on('open', function (event) {
          $('.jqx-menu-vertical-bootstrap').css({
            'max-height': '300px',
            'overflow-y': 'auto',
            'overflow-x': 'hidden',
          });
        });