Support more then one checkbox

I've checkbox with binding that I need to update ,currenlty I use the following function

but I need to add additional check-boxes,how should I write it better to support more then one CB

  handleCheckBoxChange: function(oEvent) {

  var cb = oEvent.getParameter("checked");

  var model = oEvent.getSource().getModel();

  //currently now it support just cb1

  model.setProperty("/cb1", (cb) ? "with" : "without");

  },

  assume that this is my json and I need to update them in the same function

  var data ={

  cb1 : "with",

  cb2 : "test2",

  cb3 : "test3"

  }