MCP to SRG doesn't work when building jar

[XXXL]

I'm using MCP fields 

ObfuscationReflectionHelper.getPrivateValue(AnyClass.class, foo, "bar")

The generated jar (build/libs/example.jar) has no converted fields (errors: [net.minecraftforge.fml.util.ObfuscationReflectionHelper/REFLECTION]: Unable to locate field ...).
For the jar build I tried ./gradlew build and intellij idea.
What have I missed or could have done wrong?

version:
client: 1.18
forge: 38.0.14

Edited December 5, 2021 by XXXL

[Curle]

You need to use the SRG name of fields when using the ObfuscationReflectionHelper.

That's the one that looks like f_12313_.

[XXXL]

4 minutes ago, Curle said:

You need to use the SRG name of fields when using the ObfuscationReflectionHelper.

That's the one that looks like f_12313_.

Thanks. Solved