Multiple Screens With FG Native Protocol

I am trying to get two computers to network together so that I can use multiple screens.The sending computer has an IP address of 192.168.1.105The receiving computer has an IP address of 192.168.1.104Sending computer command line: fgfs --native=socket,out,30,192.168.1.104,5500,udpReceiving computer command line: fgfs --native=socket,out,30,,5500,udp --fdm=externalThanks to anyone who can help.