No, you can't use an "earlier" key to create a "later" value - but you can use 
code to do basically the same thing.

Or, you can use the same variable that sets your CFBuildNumber to set your 
CFBundleVersion.

--
Glenn L. Austin, Computer Wizard and Race Car Driver         <><
<http://www.austinsoft.com>

> On Aug 19, 2020, at 9:07 AM, Gabriel Zachmann via Cocoa-dev 
> <cocoa-dev@lists.apple.com> wrote:
> 
> Question:
> 
> Is there a way to use a key/value that was defined earlier in the plist file
> to define a value for a later key?
> 
> Explanation:
> I have a macOS project with an automatically created "About" window.
> The plist file has, additionally to all the default stuff, the key 
> CFBuildNumber (with a value that I increment automatically).
> 
> In Xcode, I tried to change "Bundle version" to a value like
> 
>   $(CURRENT_PROJECT_VERSION)_$(CFBuildNumber)
> 
> However, in the final Info.plist in the app's bundle, this then looks like
> 
>    <key>CFBundleVersion</key>
>    <string>3.1_</string>
> 
> Notice the underscore, but the value of CFBuildNumber is gone.
> "3.1", BTW, is the value I have set under
> 
>    Project / Targets / General / Identity / Build
> 
> I have tried to change parentheses into curly braces, to no avail.
> 
> So, question again: is there a way to use a key/value that was defined 
> earlier in the plist file
> to define a value for a later key?
> I'd like to do that so that the "About" window contains the build number, too.
> 
> Thanks a lot in advance.
> 
> 
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