by kraada » Wed Dec 12, 2012 2:41 pm
You can do this by creating a custom stat. Click Configure --> Statistics and in the Players Stats section, find Live Avg Stack and click on it. Click the Duplicate button to create a new editable version starting with the Live Average Stack information.
Change to the Definition page and change the name, title, and description as you would like. For Value Expression change it to:
live_amt_stack / live_amt_bb
and change the Format Type to Number. Save your stat (you can change the detailed description if you want too, it's totally up to you as that is just cosmetic), and then you'll be able to use it in the HUD straight away.