Expression does not show sum of rows

[kirsten_dc]

Dear community,

I have created a small complex expression which does not show the sum of rows.

How can I solve this problem?

This is the expression:

(
  Sum(
  Aggr(Sum({$<gYear={$(=Max(gYear))}>}ArticleAmount),Article,ArticleGroup,Depart,Group,TPBrn)
  /
  Aggr(NODISTINCT Sum({$<gYear={$(=Max(gYear))}>} DP_DPax),TPBrn)
  )
  -
  Sum(
  Aggr(Sum({$<gYear={$(=Max(gYear)-1)}>}ArticleAmount),Article,ArticleGroup,Depart,Group,TPBrn)
  /
  Aggr(NODISTINCT Sum({$<gYear={$(=Max(gYear)-1)}>} DP_DPax),TPBrn)
  )


)
* Aggr(NODISTINCT Sum({$<gYear={$(=Max(gYear))}>} DP_DPax),TPBrn)

Thanks in advance

Kirsten