Problem with Xcode user defaults

Trying to change a few things like I had them in Xcode 3. I can't seem to get user defaults to work. These are the two changes I tried:

defaults write com.apple.Xcode XCCodeSenseFormattingOptions -dict PreExpressionSpacing ""

...which should change

if (...)  

to

if(...)

and

defaults write com.apple.Xcode XCCodeSenseFormattingOptions -dict BlockSeparator "\\n"

...which should change

if(...){

}

to

if(...)
{

}

I also tried various permutations and variants like "\n" and others I found through a web search. Nothing makes XC4 behave differently. I can see the change when I use default read, but it does nothing to XC4.

BTW, I also tried somethi开发者_Go百科ng silly like:

defaults write com.apple.Xcode XCCodeSenseFormattingOptions -dict BlockSeparator "this is junk"

No changes whatsoever in XC4.

Any ideas?

Am I doing something wrong?

Thanks!