PARALLELPERIOD not working when the current amount equals £0.00

[MrA15S]

I have created 2 measures...

1) Current amount

GL Entry Amount = sum('037_MS_GL Data_Qlik'[GL Entry Amount])+0

2) Last year's amount

Last Year Amount = CALCULATE([GL Entry Amount],PARALLELPERIOD(Dates[Date],-12,MONTH))+0

When the GL Entry Amount equals £0.00 then the Last Year Amount automatically becomes £0.00 when it should actually have a value.

Is there any reason for this? When I filter on months where the GL Entry Amount doesn't equal £0.00 then the Last Year Amount measure works fine. Really strange!

Any help will be much appreciated.

[amitchandak]

@MrA15S , for last year better you use Trailing measure

example

Year behind Sales = CALCULATE(SUM(Sales[Sales Amount]),dateadd('Date'[Date],-1,Year))

or sameperiodlast year

Year behind Sales = CALCULATE(SUM(Sales[Sales Amount]),SAMEPERIODLASTYEAR('Date'[Date]))

or measures like

YTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD('Date'[Date],"12/31"))
Last YTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD(dateadd('Date'[Date],-1,Year),"12/31"))
This year Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD(ENDOFYEAR('Date'[Date]),"12/31"))
Last year Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD(ENDOFYEAR(dateadd('Date'[Date],-1,Year)),"12/31"))
Last to last YTD Sales = CALCULATE(SUM(Sales[Sales Amount]),DATESYTD(dateadd('Date'[Date],-2,Year),"12/31"))

[MrA15S · Accepted solution]

Thank you very much for your help.

It seems like the issue was with my relationship too. The relationship between my 2 tables had a Cross filter direction = Both but when I changed it to Single, your solution worked.

Much apprecaited.