How do I set up NSZombieEnabled in Xcode 4?

Question

How do I set up NSZombieEnabled and CFZombieLevel for my executable in Xcode 4?

Answer 1

Jano's answer is the easiest way to find it.. another way would be if you click on the scheme drop down bar -> edit scheme -> arguments tab and then add NSZombieEnabled in the Environment Variables column and YES in the value column...