%@ Page Title="" Language="C#" MasterPageFile="~/Dialog.Master" CodeBehind="CustomUserFields.aspx.cs" Inherits="CheckboxWeb.Settings.CustomUserFields" %> <%@ Import Namespace="Checkbox.Web" %> <%@ MasterType VirtualPath="~/Dialog.Master" %> <%= WebTextManager.GetText("/pageText/settings/navigation.ascx/customUserFields")%> The following values are reserved and can not be used as profile properties Language, email, domain, username, and uniqueidentifier