title: Row editing is not being disabled in the grid Ext JS?
body: <p>Even if the isAdmin value is false, the row editing is still being enabled. I think the bind property in view is not working. If any would be able to help on it. Thank you.
  Code in View: </p>
  
  <pre><code>var rowEditing = Ext.create('Ext.grid.plugin.RowEditing', {
  clicksToEdit: 2,
  pluginId: 'rowEditor',
  listeners: {
      cancelEdit: 'onCancelClick',
      edit: 'onEditClick'
  },
  bind: {
      disabled: '{!isAdmin}'
  }});
  </code></pre>
  
  <p>Another part of code in controller:</p>
  
  <pre><code> init: function () {
      var access = (user_Access[0].Admin == 'True');
      if (access) {
          var vm = this.getViewModel();
          vm.set("isAdmin", access);
      }
  }
  </code></pre>