Count all values in table that share same value as current row in pivot table

I am trying to count all values in a table that have the same value as the current row.

I have a duplication key and I want to see how many time this key shows up in the rest of the table.

Duplication key:

=CONCATENATE(CONCATENATE([Total Weight kg],"-"),[Total Net Value])

Key Count:

=COUNTAX(ALL('Invoice Data'),CONCATENATE(CONCATENATE([Total Weight kg],"-"),[Total Net Value])=[Duplication Check Key])

But at the moment I am getting this:

If I do the same thing without the ALL function:

=COUNTAX('Invoice Data',CONCATENATE(CONCATENATE([Total Weight kg],"-"),[Total Net Value])=[Duplication Check Key])

I only count items in the current row and I count all of them.

The issue with power query is that you cannot simply use "@"[column] like you can in a table. Please help