java - SQL Variable not returning the correct sum -

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i have 3 variables in current report writing , variables -total wo -total -grand total

the totalwo , totalso variables correctly adding quantity parameters being passed ever reason when make grandtotal variable , pass variable expression: 

($v{totalwo_qty} + $v{totalso_qty})

when report prints displays 3 variables this"

total wo: 352 total so: 1009 grand total: 16421

i can't figure out why doing beacuse in grandtotal variable expression i'm passing , adding 2 variable. if me figure out please let me know. thank you!

i can post code like

also using ireports write these reports

@amir in comments helped me figure out (indirectly). issue 'increment type' wo , totals needed set 'none' , grand total needed set 'column'. before grandtotal variable set 'increment type: none'. still not sure why has way know working now.

what helpe me amir's wording saying "probably it's accumulating rather displaying last value of other variables".

question answered simple brainstorming- thank :)


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