Japanese ?, Chinese ? in TextToSpeech

Good day!!

In TextToSpeech,
DEU - German, FRA - French, ESP - Spanish
JAM - ?, CHE - ?
Japanse ?, Chinese ?

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I did some testing and both the ISO 639-1 and the ISO 639-2 codes worked for me.

Both ja and jpn achieved the same results:

You can find the codes here:

Keep in mind the user will need to have that specific language downloaded to their device.

Not Downloaded: