Item wise EIDiscountAmt in columnar report

Code:

[#Line : DSP ColVchTitle]
Add : Field: Before: DBC Qty : MRP
Add : Field: after: DBC GrossAmt : Scheme
Local : Field : MRP : Set as : "MRP"
Local : Field : Scheme : Set as : "Scheme"

[#Line : DSP ColVchDetail]
Add : Field: Before : DBC Qty : MRP
Add : Field: after: DBC GrossAmt : Scheme

[Field: MRP]
Use : Rate Price Field
Style : Normal Bold
Width : 10
Scroll : Yes
Set as : $$GetEIStkItemMRP:$StockItemName:$Date ;$(StockItem, $StockItemName).MRPDetails[Last].MRPRateDetails[1].MRPRate
Border : Thin Left

[Field: Scheme]
Use : Rate Price Field
Style : Normal Bold
Width : 10
Scroll : Yes
Set as : $EIDiscountAmt
Border : Thin Left

I want EIDiscountAmt to appear in columnar report, Please help

 

In the above field, I'm getting the value of MRP but the discount value I'm not able to fetch. Please guide me with the same.

I've mentioned it as
Set as : $EIDiscountAmt ; But its not fetching that value from voucher and its appearing blank in that column.

 

Could you please guide the same?

 

Could you please help?