AngularJS + Bootstrap Dropdown : can't do ng-click in ng-repeat

I'm trying to create a picker with Bootstrap Dropdown and AngularJS.

http://jsfiddle.net/qbjfQ/

<li ng-repeat="item in list"><a ng-click="current = item">Dynamic set {{item}}</a></li>

When I use ng-click statically in the list, it works fine (example 4 and 5) But when I use ng-click in ng-repeat, it won't update the value (example 1 to 3)

What can I do ?