Run RubyMine 5 on 32-bit Java on Mac OS?

I'm trying to run Rubymine 5.4 on 32bit Java (need the extra memory room). Looking at my java version:

> /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Commands/java -d32 -version
java version "1.6.0_51"
Java(TM) SE Runtime Environment (build 1.6.0_51-b11-456-11M4508)
Java HotSpot(TM) Client VM (build 20.51-b01-456, mixed mode)

Which indicates a 32 bit version.

In Info.plist, I changed:




(completely removed x86_64)

And I added "-d32" to the top of idea.vmoptions:

> cat /Applications/

But when I run Rubymine I still get 64 bit server edition:

Screen Shot 2013-06-26 at 12.29.02 PM.png

How can I force the 32 bit java instance?

Version info:

RubyMine 5.4.2, build RM-129.512.
Mac OS X 10.7

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