在国际化我的应用程序之前，如何更改Xcode中的开发语言?

I'm taking over an app that was written entirely in French. Strings are hardcoded in French in the code, and all the messages in the storyboard are in French. But the initial development region in Info.plist was left to English. So I changed CFBundleDevelopmentRegion to fr so that it matches the real language that was used. But XCode keeps telling me that my Development language is English:I'm taking over an app that was written entirel