<div ng-dropdown-multiselect=""
  options="example65data"
  selected-model="example65model"
  extra-settings="example65settings"></div>

$scope.example65model = [{id: 1}];
  $scope.example65data = [{id: 1, label: "David"}, {id: 2, label: "Jhon"}];
  $scope.example65settings = {selectionLimit: 3};

  $scope.updateMultiSelectLimit = function (){
       $scope.example65settings = {selectionLimit: 2};
   }
  $scope.updateData = function(){
    $scope.example65data = [{id: 1, label: "Peter"}, {id: 2, label: "Yiss"}, {id: 3, label: "Max"}];
  }