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1) Nimus without an army!!! (just kidding)
2) You need to write nil instead of false there... I think.
3)*** Is it possible to launch a function like that? I didn't know. And you can make it simpler. Add if heroname == 'Christian' then to the function body. Then we'll see if it's at least calling heroname, or not even trying. (And don't forget to put end then)
Stop! How are you putting the quotes?! If you press E twice (with the English keyboard layout), that's wrong, you need " (shift+2)