diff --git a/source/Ox.UI/js/Form/Ox.OptionGroup.js b/source/Ox.UI/js/Form/Ox.OptionGroup.js
index 71ed2fa0..e36bab1b 100644
--- a/source/Ox.UI/js/Form/Ox.OptionGroup.js
+++ b/source/Ox.UI/js/Form/Ox.OptionGroup.js
@@ -109,8 +109,10 @@ Ox.OptionGroup = function(items, min, max, property) {
     value <f> get value
     @*/
     this.value = function() {
-        var value = Ox.map(items, function(item) {
-            return item[property] ? item.id : null;
+        var value = items.filter(function(item) {
+            return item[property];
+        }).function(item) {
+            return item.id;
         });
         return max == 1 ? (value.length ? value[0] : '') : value;
     };