title: ionic/Angularjs - not able to unchecked check box on ng-change
body: <p>I have one drop down and a check box, i want to <strong>reset check box value to false</strong> <strong>whenever drop-down value change</strong>. I had already written code for reset check box value to false, but it is not working, please tell me where i am doing wrong. </p>
  
  <p><strong>View:</strong></p>
  
  <pre><code>&lt;label class="item item-input item-select"&gt;
          &lt;div class="input-label"&gt;Leave Type&lt;/div&gt;
          &lt;select ng-model="LeaveRequest.leaveType" ng-change="leavetypechange(LeaveTypes)" required&gt;
            &lt;option value=""&gt;Select Leave Type&lt;/option&gt;
            &lt;option ng-repeat="lt in LeaveTypes"value="{{lt.Name}} "&gt;{{lt.Name}}&lt;/option&gt;
         &lt;/select&gt;
  &lt;/label&gt;
  &lt;div ng-show="ShowPeriod"&gt;
        &lt;ion-checkbox  ng-model="isChecked" &gt;Half day/ Quarter leave&lt;/ion-checkbox&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p><strong>controller:</strong></p>
  
  <pre><code>.controller('ApplyLeaveCtrl',function($scope, $state, $templateCache,$ionicPopup) {
   $scope.leavetypechange=function(){ 
              $scope.isChecked=false;
              };
  });
  </code></pre>