ios - Xcode Instruments - Enable NSZombie Detection? Where is it? -

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i have watched video http://www.markj.net/iphone-memory-debug-nszombie/

the guy shows option called enable nszombie detection on allocations inside instruments, instruments doesn't shows option. guy's video done using 1 year old version of instruments , using xcode 3.2.5. guys know option now? how can enable iphone apps?

thanks

in xcode 4.0, 'enable zombie' option present in iphone simulator , not when profile on actual device.


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