Only one. The person who has the secondary character which will keep the gold and items. He will have an infinite amount of gold so each time you dupe you open the same character and give gold to person1, then ALT+F4 go back give to person2 and so on.
o.o If I'm not mistaken he said a lot of servers have fixed this hack since it is rather and easy one to fix. and heroes reborn is a really popular shaiya.
+Diego Godoy How so? Mr. Expert. If you tried it and it didn't work, you either did it wrong or the server has already fixed this cause it's easy to fix.