My guess - that variable name is just not correct utf8. You can freely use most weird variable names without "strict": 
${"weird var name even with a space in it!"} = 'qwerty';
print ${"weird var name even with a space in it!"};

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That code works, and even stranger variable names will work without "strict".

To be more specific, what exactly hexadecimal codes of that strange variable name?

Courage, the Cowardly Dog

In reply to Re: Getting error when declaring utf8 variable as lexical by Courage
in thread Getting error when declaring utf8 variable as lexical by MrNobo1024

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