InstallID
Variable that is set to a unique installation identifier when the installer runs a new installation. It uses the GUID format {aaaaaaaa-bbbb-cccc-dddd-eeeeeeeeeeee}.
Usage
You can refer to this variable as <InstallID>. Do not set this variable; it is set by InstallMate during new installations. Subsequent runs from an installed base (Installed is nonzero) leave this variable unchanged.