LibreOffice how to set GUI language from command line

I need to set langugae for gui from command line. I use portable version.
Tried to change
C:\LibreOfficePortable\App\libreoffice\share\extensions\dict-ru\Linguistic.xcu
but it was no use.
Very in need of help.

Found
UILocale variable in LibreOfficePortable.ini
but it does not help

Finally got

en-US
ru

C:\LibreOfficePortable\Data\settings\user\registrymodifications.xcu

It helped me to run english interface