How do you sum Variables

[wilkanah]

Hi,

I have a report where in one column i try to show dynamically a variable value based on one or more data fields and certain conditions

 

($P{DEALER_ID}.intValue()!=1 && $F{dealer_id}.intValue()==1)?1.5:$F{dealer_contract}.doubleValue()

 

Such that in my detail band i can have

 

$F{dealer_name}    $F{value}    $V{variable1}

 

$V{variable1} evaluates to the expression above

 

What i want to do is sum up all  $V{variable1} and display the sum in a group header band above.

 

Any pointers will be appreciated.