javascript - Angular UI multiple ui-select not working -

multiple select in angular ui-select not working. example:

 <ui-select multiple ng-model="params.filter()['manager']" class="form-control" reset-search-input="false">                                 <ui-select-match class="ui-select-match" allow-clear="true" placeholder="manager">{{$select.selected.name }}</ui-select-match>                                 <ui-select-choices class="ui-select-choices" repeat="item.id item in selectarray.managerarray  | filter: $select.search "                                                    refresh="refreshitem($select.search, 'usergetsearch', 'managerarray')"                                                    refresh-delay="0">                                     <div ng-bind-html="item.name"></div>                                  </ui-select-choices>                             </ui-select>