DMX in not showing on the 2D map or Live output

I am tryning to make Onyx to be a simple DMX Viewer via DMX in on a NX-DMX interface. I am using the"A" port on the interface wich I have put to “DMX in” on universe 1. On the Routing tab I have put Port 1 to “USB2DMX in Universe 1”., and also activated the port. On the Mergers tab I have put Merger 1 active on sourceport 1. In HTP mode/Merger and Capture.
But I can not se anything happening on the “live output” or on The 2D layout. I have ofcource patched fixtures on the cannels I am using.

I dont believe the DMX In values are used in the 2D layout.