Fix "required" validator

@@ -11,9 +11,7 @@ define(
                 };
                 };
             },
             },
             createRequiredValidator: function(label) {
             createRequiredValidator: function(label) {
-                return {
-                    required: Base.createRequiredChecker(),
-                };
+                return Base.createRequiredChecker(label);
             },
             },
         };
         };
         return Base;
         return Base;