HowTo Add Button To GroupField

{
   "operation": "insert",
   "parentName": " ResultControlGroup",
   "name": "TestButton",
   "propertyName": "tools",
   "values": { 
      itemType: this.Terrasoft.ViewItemType.BUTTON,
      caption: "111",
      click: {bindTo: "zzz"},
      visible: true,
   }
},

OR

{
   "operation": "insert",
   "parentName": "GeneralInfoTab",
   "name": "ResultControlGroup",
   "propertyName": "items",
   "values": {
      "itemType": Terrasoft.ViewItemType.CONTROL_GROUP,
      "caption": {"bindTo": "Resources.Strings.ResultControlGroupCaption"},
      "items": [],
      "tools": [
         {
            itemType: this.Terrasoft.ViewItemType.BUTTON,
            caption: "111",
            click: {bindTo: "zzz"},
            visible: true,
            tag: "onUnsubscribeChannelClick"
         }
      ]
   }
},