jQuery(document).ready(function($) {
    if (typeof order_success_vars !== 'undefined' && order_success_vars.show_modal) {
        var modal = document.getElementById("successModal");
        if (modal) {
            var myModal = new bootstrap.Modal(modal, {
            backdrop: 'static',
            keyboard: false
            });
            myModal.show();
        }
    }
});