how to change visustella message core language midgame ?

As mentionned in the title, I want the player to be able to select the game language the first time they run the game (outside of the option menu, I know you can do it there).

Is there a script call or a plugin parameter that I may have missed ?

Edit: I forgot the link to the script: Message Core VisuStella MZ - Yanfly.moe Wiki

Thanks for the help

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