diff --git a/src/select2.js b/src/select2.js
index 828032d..da69114 100644
--- a/src/select2.js
+++ b/src/select2.js
@@ -42,7 +42,14 @@ angular.module('ui.select2', []).value('uiSelect2Config', {}).directive('uiSelec
           if (opts.simple_tags) {
             model = [];
             angular.forEach(select2_data, function(value, index) {
-              model.push(value.id);
+              //modified by yjin to allow customized conversion function in options
+              //Original code here: model.push(value.id);
+               if(opts.convertToAngularFunc && (typeof (opts.convertToAngularFunc) === 'function')) {
+                     opts.convertToAngularFunc.call(this, model, value);
+               }
+               else {
+                     model.push(value.id);
+               }
             });
           } else {
             model = select2_data;
@@ -64,8 +71,15 @@ angular.module('ui.select2', []).value('uiSelect2Config', {}).directive('uiSelec
             angular.forEach(
               angular_data,
               function(value, index) {
-                model.push({'id': value, 'text': value});
-              });
+                 //modified by yjin to allow customized conversion function in options
+                 //Original Code here:  model.push({'id': value, 'text': value});
+                 if(opts.convertToSelect2Func && (typeof (opts.convertToSelect2Func) === 'function')) {
+                     opts.convertToSelect2Func.call(this, model, value);
+                 }
+                 else {
+                     model.push({'id': value, 'text': value});
+                 }
+            });
           } else {
             model = angular_data;
           }