Angular JS - Select option select option by value id - angularjs

Question

I has made a ng-repeat of all users but what i want is that he selected current user
<select id="taskUser" class="form-control"
multiple="multiple"
ng-model="taskUser"
ng-options="user.ID as user.Name for user in header.users"
>
</select>
This is my repeater and i show how te list is look like:
<select id="taskUser" class="form-control ng-pristine ng-untouched ng-valid ng-empty" multiple="multiple" ng-model="taskUser" ng-init=" users = header.users[2].id" ng-options="user.ID as user.Name for user in header.users">
<option label="User 1" value="string:1">User 1</option>
<option label="User 2" value="string:2">User 2</option>
<option label="User 3" value="string:3">User 3</option>
</select>
To get the current user id i used {{header.user.ID}} than i get the result just: 3
That means that this need to be selected
<option label="User 3" value="string:3">User 3</option>

Answer 1

$scope.taskUser should be list and defined as [3] because you use multiple
Fiddle Demo
Full code:
function MyCtrl($scope, $timeout) {
$scope.header = {
users:[
{ID: 1, Name: "AAA"},
{ID: 2, Name: "BBB"},
{ID: 3, Name: "CCC"}
]
};
$scope.taskUser = [3];
}
HTML
<select id="taskUser" class="form-control"
multiple="multiple"
ng-model="taskUser"
ng-options="user.ID as user.Name for user in header.users"
>
</select>
<pre>taskUser: {{taskUser|json}}</pre>

Answer 2

You need to define the selected value in an array $scope.taskUser = [3];
var myapp = angular.module('myapp', []);
myapp.controller('FirstCtrl', function ($scope) {
$scope.header = {};
$scope.header.users = [
{ ID: 1, Name: 'John' },
{ ID: 2, Name: 'Rocky' },
{ ID: 3, Name: 'John'},
{ ID: 4, Name: 'Ben' }
];
$scope.taskUser = [3];
});
<script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.2.23/angular.min.js"></script>
<div ng-app="myapp">
<fieldset ng-controller="FirstCtrl">
<select id="taskUser" class="form-control"
multiple="multiple"
ng-model="taskUser"
ng-options="user.ID as user.Name for user in header.users"
></select>
</fieldset>
</div>