yes, you will need to install that currency sorting Extension (and don't forget to activate it!).
The part like
"column-8" defines which column has the currencies. Just adjust that properly. For several currency columns in one table, you would use
"column-2", "column-3", "column-7" with the correct column numbers.
If you still can't get it to work, please post the URL of the page/post with the table that you are trying this on.