Angularjs pass function from Controller to Directive (or call controller function from directive) - with parameters

var myapp =angular.module('myapp',[]);

myapp.controller('myCtrl',['$scope','$timeout',function($scope,$timeout){
  
  $scope.fnItemsOnAdded = function(itms){
     alert('Hi, I am in controller add. Here are your Items: '+JSON.stringify(itms));
    }
    $scope.fnItemsOnCancel = function(itms){
     alert('Hi, I am in controller cancel. Here are your Items: '+JSON.stringify(itms));
    }
  
  }]);

myapp.directive('myPicker',['$timeout',function($timeout){
  
  
  var dtv={};
  
  dtv.template = '<li ng-repeat="itm in ngModel.ItemsList"><label><input type="checkbox" ng-model="itm.IsSelected" />{{itm.Name}}</label></li>';    
  dtv.template += '<a href="javascript:void(0)" ng-click="addItems()" class="addItems">add items</a>';
  dtv.template += '<a href="javascript:void(0)" ng-click="cancelItems()" class="cancel">cancel</a>';
  
  dtv.scope =  { postUrl: '@', jsonadd: '&', jsoncancel: '&' };
  
  dtv.restrict = 'A';
  
dtv.link = function($scope,elm,attrs){
  
  $scope.ngModel={};
  $scope.ngModel.SelectedKeys=[];
  
  $timeout(function(){
    $scope.ngModel.ItemsList = [
    {Name:"Item1",IsSelected:false},
      {Name:"Item2",IsSelected:false},
      {Name:"Item3",IsSelected:false},
      {Name:"Item4",IsSelected:true},
      {Name:"Item4",IsSelected:false},
    ];
    
    },100);
  
    $scope.addItems = function(){
      
      //Dummy logic to update SelectedKeys
      for(var idx =0;idx<$scope.ngModel.ItemsList.length;idx++){
      if($scope.ngModel.ItemsList[idx].IsSelected){
      $scope.ngModel.SelectedKeys.push($scope.ngModel.ItemsList[idx]);
      }
      }
      
    alert("i'm in directive add. Lemme call parent controller");
    $scope.jsonadd($scope.ngModel.SelectedKeys);
    }
  
    $scope.cancelItems = function(){
    alert("i'm in directive cancel. Lemme call parent controller");
    $scope.jsonadd($scope.ngModel.SelectedKeys);
    }
    
  }
  
  
  return(dtv);
  
  
  }]);

<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>

<div ng-app="myapp" ng-controller="myCtrl">

<div class="jqmWindow" id="myPickListDiv" my-picker  jsonadd="fnItemsOnAdded" jsoncancel="fnItemsOnCancel" post-url="/myurl"></div>
  
  </div>