diff --git a/source/Ox.UI/js/Core/Ox.API.js b/source/Ox.UI/js/Core/Ox.API.js
index aae66f50..943a15cf 100644
--- a/source/Ox.UI/js/Core/Ox.API.js
+++ b/source/Ox.UI/js/Core/Ox.API.js
@@ -48,11 +48,12 @@ Ox.API = function(options, callback) {
             that[key] = function(/*data, age, callback*/) {
                 var data = {}, age = -1, callback = null;
                 Ox.forEach(arguments, function(argument) {
-                    if (Ox.isObject(argument)) {
+                    var type = Ox.typeOf(argument);
+                    if (type == 'object') {
                         data = argument;
-                    } else if (Ox.isNumber(argument)) {
+                    } else if (type == 'number') {
                         age = argument;
-                    } else if (Ox.isFunction(argument)) {
+                    } else if (type == 'function') {
                         callback = argument;
                     }
                 });