in reply to Passing C++ variable into Perl in command line

Replace
--name=Bacon N Eggs
with
"--name=Bacon N Eggs"
or even
--name="Bacon N Eggs" 

system("cmd.exe /C \"c:\\Program Files\\Forterra\\OLIVE SDK 2.0.1\\uti
+l\\legacy\\src\\Tool\\AddAvatar.pl\" --name=\"Bacon N Eggs\" --host=1
+27.0.0.1:9911});

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In Section Seekers of Perl Wisdom