How do l tell ST to translate a text message stream for a specific contact?

[AC Question]

l have a contact who is in spain. When l text him, l want S Translate to translate my words into Spanish so that he can read them in his own language.....then when he sends me his answer in Spanish, l want ST to translate HIS response into English so that l can read what he wrote. Thank you

 

[Rukbat]

Automatically? I doubt that you can. Copy the English text, use ST to translate it, then paste the translation into the text app and send the text.