Iflow - OData (POST) Backend Client

Hello World,

I've an iflow that calls (POST) and OData service on the backend:

So far so good, but now i want to switch the call from the default client (400) to another one (like 410), where can i set it up here?

The service is also configured on 410 and working... would it be something like ...?sap-client=410 or any SICF config?

Thanks a lot.