anchor.diff:            "sButtonText": "Ver lista de correos (grupos seleccionados)",
             "oSelectorOpts": { filter: 'applied', order: 'current' },
             "sAjaxUrl": "/mails_user_groups.json",
  -          "fnClick": function( nButton, oConfig) {
  +          "sAction": "flash_copy",
  +          "fnClick": function( nButton, oConfig, flash) {
               var sData = [];
  +            var self = this;
  +            var f = flash;
               $( "input:checkbox:checked" ).each(function(i,item){
                 sData.push($(item).val());
               });
  
positive.code:     <div class="modal-content">
        <div class="modal-header">
          <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
          <h4 class="modal-title"><span class="glyphicon glyphicon-warning-sign"></span> Lista de Correos</h4>
        </div>
        <div class="modal-body">
        </div>
  
negative.code:               "data": [ { "name": "data", "value": sData }],
                "dataType": "json",
                "type": "GET",
                "cache": false,
                "async": false,
              })).then(function(data) {
                var lines = 1
                var plural = (lines==1) ? "" : "s";
                f.setText(data);
                var modal = $('#myModal');
                if (data.length == 0) {
                  data = "No hay correos por mostrar. Asegurese de seleccionar los grupos";
  