BRF+ Comparing 2 variables of table operation

Hi,

I'm facing a restriction of BRF in my application.

The principle is simple:

I have to make a total of column 024, but only when 024 is bigger than 181 and when 621 equals X. (see picture)

The problems is when I want to check if 024 is bigger, the second parameter can only exist from the context and will always be the first value of this table. Does anybody know a way to select a second parameter of the looped table instead of a parameter from the context? Or is this just a restriction of BRF?

Kind regards,

Tim