Override DefaultEngine.ini values when packaging

Development Getting Started & Setup
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Hello
I’m wondering if it’s possible to override some of the .ini files, when packaging a project.
I’m using RunUAT.bat to build and package my game for uploading to steam, however I have a Steam Playtest enabled, which requires different AppId.
I want to avoid human error, so I’m making a batch script that builds and uploads my game.

For this I’d like to overwrite some values in the DefaultEngine.ini (SteamDevAppId, and some custom made ones) just for the package, without actually modifying the file, since I want to be able to build both for Playtest, and for my main app.

Is there any way to do it? Either append an ini file (like making a PlaytestEngine.ini file, that only contains the overridden values), or directly overwrite the values somehow?

How do others handle playtests, and different config values for different builds?

Thank you!

1 Like
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I was wondering the same thing and just found this document : Config injection during packaging | Unreal Engine Community Wiki

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I have found this once, but I believe it did not work for me, something about packaging process itself ignored the changed config, just was inserted after, or something like that, can’t remember the exact problem.
Have you tried it, did it work for you?