ProductLanguage
This variable contains the language ID for the installer's user interface, in decimal notation. The language IDs are defined as per Win32 conventions; see Language Identifiers on the MSDN web site.
Usage
Used internally by the installer. You can refer to it as <ProductLanguage>. Do not set this variable manually; it is set by InstallMate when the user has selected the desired installation language, early in the installation process.
Related topics
SystemLanguageID, UserLanguageID, System information variables