Analog Heat OB audio routing issue

Hello,
I have some difficulties to set up my AH mk2 with overbridge.

I have an audio source connected on the analog input, and the analog output connected to my monitors. The USB cable is connected to my PC and OB is running.

I want to record my audio source with FX applied, but It don’t work.
When I play, I hear the FX on my monitors, but the recored sample is dry. I don’t understand how to set up a routing like that: analog in -> FX -> USB + analog out.

I succeed this setup in class compliant mode but can’t find in OB.
Any help?

Thanks.