Hi Christian,
Having multiple languages in Simplifier basically works like having only two: each language needs its own PO file. The respective language can be set using the Client-Side Business Object ‘SIMP_UI5Helper’ – ‘setLanguage’ with the respective language code.
I understand that you also want to translate the labels of the EntityStatus, is that correct? Then I’d recommend adding a language column to the EntityStatus table (or having a separate table for that, depending on your use case) and adding the label text in each language.
When fetching the status labels from the database in a Business Object, you can add the language code to the input parameters and pass it to the SQL connector, e.g. ‘WHERE language = <language_code>’.
When changing the language in the application, you then need to execute the statement again that fetches the entity status labels in the correct language (e.g. by using an event that is fired when the language is changed).
Let me know if you have any questions.