How to change the language during runtime

Hi everyone,

I need to change the language of the installer if some criteria are met, I don't want to show the "Select language" dialog. What instruction is used to switch the language? I have included all the languages I might be willing to switch to. How to switch from the default (first) to different one?

Thanks

I have figured out I have to set an appropriate language ID to the variable named $LANGUAGE to switch between MUI languages.