checked for existing pickedItems

src/lupickertable.js

@@ -16,7 +16,9 @@ angular.module('luticateUtils')
 
                     $scope.pickerOptions = $scope.options();
                     $scope.pickerOptions.luPickerTableScope = $scope;
-                    $scope.pickerOptions.pickedItems = [];
+                    if ($scope.pickerOptions.pickedItems == null) {
+                        $scope.pickerOptions.pickedItems = [];
+                    }
 
                     var onItemClicked = $scope.pickerOptions.onItemClicked;
                     $scope.pickerOptions.onItemClicked = function(item)