how to make culture fallback in V4

[Mentopolis]

Hello,

some question about using specific culture file with fallback

In WIX 3.X we could write something like "-cultures:de-de;en-us" which means use the "de-de" and if it fails go back to "en-us"
In WIX 4 this don´t work any longer. How to get the same behavior here.

Using "-culture de-de;en-us " lead to a error
Using "-culture de-de -culture en-us" seams to work but we got e.g. for "-culture ja-jp -culture en-us", which was not the case for WIX 3.X

" error WIX0311: A string was provided with characters that are not available in the specified database code page '1252'"

[Mentopolis]

the error "WIX0311: A string was provided with characters that are not available in the specified database code page '1252'" is solved when removing the static codepage attribute from my package. So the only open question is the syntax

"- culture a - culture b"

the official syntax for fallback the languages