sweetalert: Second swal not executed

Hello,

I’ve this sweet-alter call :

var self = this; 

swal({
      title              : $.t('modal.clear.title') || "Etes vous sûr ?",
      text               : $.t('modal.clear.text') || "Le formulaire sera définitivement perdu !",
      type               : "warning",
      showCancelButton   : true,
      confirmButtonColor : "#DD6B55",
      confirmButtonText  : $.t('modal.clear.yes') || "Oui, supprimer",
      cancelButtonText   : $.t('modal.clear.no') || "Annuler",
      closeOnCancel      : true
}, function(isConfirm) {
   if (isConfirm){
       // I Use backbone radio event
       self.homePageChannel.trigger('deleteForm', self.currentSelectedForm)
   }
});

In the callback I send a an event with backbone radio. At this point all is good.

And in my event response i want to display an another sweet alert like this :

formDeleted : function(result) {
        swal({
            title : $.t('modal.deleted.title') || 'Formulaire supprimé !',
            text  : $.t('modal.deleted.text') || 'Votre formulaire a été supprimé avec succès',
            type  : "success",
        });
  },

And the second sweet alert doesn’t appear. And i’m sure formDeleted function is executed.

Thanks for your help