Full accumulation - the lines don't continue together

[shai2127]

Hey,

I have an accumulation graph that shows new clients per source, but they don't end at the same point(see pic below).

how I can make all the sources end at the same point?

my function: 

sum(Aggr(RangeSum(Above(
Count({<[conversion_date]={">=$(vMinDate) <=$(vMaxDate)"},Comb_Owner_Type={'FTD_Owner'} ,Date_Type={'conversion_date'}>}distinct contactid)
,0,RowNo())), affiliate_source,affiliate_name,(Date, (NUMERIC, ASCENDING))))