How to modify the default confirm button of ligerui

As shown below:

$.extend($., {ok: 'Cancel document'});
      showDialogPay = $.('Payment is in progress, please wait...',function(){
        clearInterval(intval);
        $.extend($., {ok: 'confirm'});
        payReverse();
      });

The above is all the content of the method to modify the default confirm button of ligerui brought to you. I hope everyone supports me~