How to get Total Before Discount from active A/R Invoice by FMS

Hi All,

I need Total Before Discount from active A/R Invoice to one of the udf. For that I have tried Query as below :

Select $($22.0.0) / select $($22.0.Number) / select $($22.0.Currancy)

I have use squre bracket in query.

but it shows me Internal Error - 3006

Can any body help me to resolve this please.

With Best Regards,

Chintesh Soni