ko.bindingHandlers.myBinding = {

    update: function(element, valueAccessor, allBindingsAccessor, viewModel, bindingContext) {

      var bindingValue = ko.utils.unwrapObservable(valueAccessor());

      var templateName = bindingValue.name;

      var data = ko.utils.unwrapObservable(bindingValue);  

         console.log(bindingValue);

       var innerBindingContext = bindingContext.createChildContext(data); 

      var templateSubscription = 

          ko.renderTemplate(templateName, innerBindingContext, {}, element, 'replaceNode');

    }

};

​

var Field = function(name,multi){

  var self = this;

  self.myName = ko.observable(name);

  self.displayName = ko.observable('multi');

};

​

​

var ViewModel = function(){

  var self = this;   

  self.control1 = ko.observable(new Field('3',true));

};

​

ko.applyBindings(new ViewModel());