I have a data like this
[Original Data](https://i.stack.imgur.com/boL3y.png)

and i intend to create the output like this
[Output](https://i.stack.imgur.com/tuZg3.png)

I have made the SSRS with Expression for debit like this

`=IIF(SUM(Fields!Amount.Value)>0,SUM(Fields!Amount.Value),0)`

and on credit like this

`=IIF(SUM(Fields!Amount.Value)<0,SUM(Fields!Amount.Value),0)`

The problem i have was i don't know how to total the report items on debit and credit column.
I tried this expression for totaling the debit and credit

`=SUM(ReportItems!DebitColumn.Value)`
`=SUM(ReportItems!CreditColumn.Value)`

the result is error. Is there an expression or something to total those debet and credit column per group A ?