How can I multicast in Cpp?

I know I can use this tutorial for forcing a function to work on the server:

But if I try to change the “server” to “multicast” or “Multicast”.
It giving me this error:

Error	2	error MSB3073: The command ""D:\Program Files\Epic Games\4.8\Engine\Build\BatchFiles\Build.bat" OldSchoolNightmareEditor Win64 Development "C:\ProjectPath\OldSchoolNightmare.uproject" -rocket" exited with code -1.	C:\Program Files (x86)\MSBuild\Microsoft.Cpp\v4.0\V120\Microsoft.MakeFile.Targets	38	5	OldSchoolNightmare

It should be NetMulticast :slight_smile:

Thanks! This is messed up in the documentations, each document is relevant for other version.