Those are just the names of default columns so you haven't created anything new as far as I can see. You need new column names and you have to edit the column expressions so they count what you want them to otherwise the new columns will just count the same thing as the original columns. Please refer to this guide
for the basics on custom statistics creation and this guide
for a deeper walkthrough. The latter was written for PokerTracker 3 but the techniques all apply to PokerTracker 4, the interface is just slightly different.