title: how to access model property in custom binding knockout
body: <p>I am using knockout.js custom binding for jquery ui tabs. I create an example fiddle </p>
  
  <p><a href="http://jsbin.com/ikidiw/7/edit" rel="nofollow">http://jsbin.com/ikidiw/7/edit</a></p>
  
  <p>Here i am trying to set currentSelectedTab property of current model object in custom binding through allBindingsAccessor. But getting error that model obejct do not have currentSelectedTab function. Whats the problem ?</p>