Toolset: Displaying captions in the lightbox display for gallery images

Jquery, Toolset
jQuery(function ($) {
    var gallery = $('#my-gallery')
    gallery.find('li').each(function () {
        var caption = $(this).find('figcaption').text()
         
var link = $(this).find('a')
        link.attr('data-title', caption)
    })
});