++++ Officials - Remuneration - Family allowances - Deduction of allowances paid under a national system - Determination of the amount to be deducted - Account taken of the weighting for the country paying the national allowance - That weighting applied when it is less than the weighting for the place of employment - Breach of the principle of equal treatment (Staff Regulations, Art. 67(2); Annex VII, Art. 17(3))