"Set Mass Override in Kg" and "Set Mass Scale" Blueprint node don't work.

Apropos of nothing, this is the code to get the mass (the built-in mass gets the welded body mass):

UFUNCTION(BlueprintPure)
	static float GetPrimitiveMass(UPrimitiveComponent* InComponent)
	{
		if (InComponent)
		{
			// unlike the official function, get the unwelded body instance
			if (const auto* BodyInstance = InComponent->GetBodyInstance(NAME_None, false))
			{
				return BodyInstance->bOverrideMass ? BodyInstance->GetMassOverride() : BodyInstance->GetBodyMass();
			}
		}

		return 0.0f;
	}