define(function(require){

   var $ = require("jquery");

   var justep = require("$UI/system/lib/justep");

   var Model = function(){

           this.callParent();

           this.myText = justep.Bind.observable("bind!");

   };

   Model.prototype.button2Click = function(event){

           this.myText.set(false);

   };  

   return Model;

});