How to force 64 bit build from Build Script?

When I invoke the Build command in the IDE, I like to have a Build Automation script to set the Target to “Mac 64 bit”.

Is there a way to do that? E.g, can I set a particular ConstantValue for that (I’d use the value 16, I guess, as I’d also use with the “BuildApp” IDE scripting command).

AFAIK when building the app you are already preparing the build process so it’s too late within an app. Therefore you need an IDE Communicator script, where BuildAPP(16) is the correct way to go.