how to use deepL to translate from japanese to traditional chinese?

[jerry880904]

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[Service] Endpoint=DeepLTranslate FallbackEndpoint=

[General] Language=zh-TW FromLanguage=ja

If I use zh-tw, Endpoint=GoogleTranslateV2 can successfully translate but when I replaced Endpoint=GoogleTranslateV2 to Endpoint=DeepLTranslate the translation fails

When Endpoint=DeepLTranslate unchanged, but replace Language=zh-tw to Language=zh it works but the text become Simplified Chinese how can it translate to Traditional chinese?