Count of mindate works but not sum. Ingoing balance calculation

[qlikster]

Hi,

I have an expression that counts the CustId of the variable vMinDate which is set as if it's the first row. Otherwise it sums the Above row. This works without any problems when doing a count. But when I'm trying to sum the Invoiced Value it just doesn't work

Variable:

vMinDate=Min(Date)

Working expression:

if(RowNo()=1,Count({$<FlagDayActive={1},Date={'$(vMinDate)'},Year=,Month=,Week=>}DISTINCT CustID),
Above(FirstSortedValue(AGGR( Count({$<FlagDayActive={1}>}DISTINCTCustID), Date), -AGGR(Date,Date))))

This expression doesn't work

=if(RowNo()=1,sum({$<FlagDayActive={1},Date={'$(vMinDate)'},Year=,Month=,Week=>} INVOICE_VALUE),
Above(FirstSortedValue(AGGR( Sum({$<FlagDayActive={1}>} INVOICE_VALUE), Date), -AGGR(Date,Date))))

This is how the results from the working expression of count CustID looks.

[Dataintellinalytics]

When you say expression doesn't work is it giving error or wrong result ?

Please share sample mock data and expected output.