bootstrap system doesn't work in Evernote China Yinxiang Biji

[umekun123]

Hello, Evernote says it will switch to Evernote China automatically with their bootstrap system, but my below swift code in AppDelegate doesn't work in Evernote China, is there anything wrong?
https://dev.evernote.com/doc/articles/bootstrap.php

// Works without China
ENSession.setSharedSessionConsumerKey(Key.Evernote.cunsumerKey,
consumerSecret: Key.Evernote.cunsumerSecret,
optionalHost: nil)

// Doesn't work anywhere
ENSession.setSharedSessionConsumerKey(Key.Evernote.cunsumerKey,
consumerSecret: Key.Evernote.cunsumerSecret,
optionalHost: ENBootstrapProfileNameInternational)

// Doesn't work anywhere
ENSession.setSharedSessionConsumerKey(Key.Evernote.cunsumerKey,
consumerSecret: Key.Evernote.cunsumerSecret,
optionalHost: ENBootstrapProfileNameChina)

// Doesn't work anywhere
ENSession.setSharedSessionConsumerKey(Key.Evernote.cunsumerKey,
consumerSecret: Key.Evernote.cunsumerSecret,
optionalHost: "www.evernote.com")