\TrackLangProvidesResource{BE}[2016/10/06 v1.2]

\providecommand*{\BEunits}{%
  \renewcommand*{\weightunit}{kg}%
  \renewcommand*{\lengthunit}{mm}%
  \renewcommand*{\currencyunit}{EUR}%
}

\TrackLangAddToCaptions\BEunits