[8FS_Bulau]

If you look through the instructions that come with the SAS Modact, there should be something about copying and renaming the hud_msg.properties file to a different location. If you can't find it, try this:

For English, copy .../i18n/hud_msg.properties to .../MODS/STD/i18n/ and rename to hud_msg_ru.properties

For Polish, not sure, but maybe look for hud_msg_pl.properties