angularjs - Changing the data source of ui select on event -

i want change data source of select each time select new.

this how markup of directive looks:

<ui-select on-select="fclick($item,$model)"      on-remove="rclick($item,$model)"     reset-search-input="true"      close-on-select="true"      multiple      ng-model="namesmodel.selected"     theme="select2"      ng-disabled="disabled"      style="width: 100%;">      <ui-select-match placeholder="select user...">{{$item.name}}</ui-select-match>     <ui-select-choices repeat="user in users">         <div ng-bind-html="user.name | highlight: $select.search"></div>     </ui-select-choices> </ui-select> 

for example: initial source like: scope.users = [{name:"user1",address:"address1"},{name:"user2",address:"address2"}] whenever select user1 want call rest service , change value of scope.users or change whole source if possible.

the issue on fclick this:

'somesvc.getnewdatasource().then(function (data) { scope.users = data; })'  

but doesn't change source. missing here?