> The output is exactly as expected.

you should use warnings ... always!

Reference found where even-sized list expected at - line 16.

the only reason why your output seems to be correct is that you are dereferencing the $vars hash-ref from the closure° not the supposedly passed %vars .

please note that %vars and $vars are two different variables in separate namespaces.

try

my ($value, $vars) = @_;

and do yourself a favor and write

$vars->{test}; instead of $$vars{test}

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

°) "global" might be easier to understand

Update

Stripped quotes from hash-key

In reply to Re: Dereferencing in blessed object by LanX
in thread Dereferencing in blessed object by Bod

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