and the general answer for this is:
debug.
print out variables, if you're not sure what's in it.
and even if you're sure. 
use Data::Dumper;
$Data::Dumper::Useqq = 1; # print non-printable chars
warn Dumper $blackbox;

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In reply to Re^3: Simple? problem accesssing elements in a hash by tinita
in thread Simple? problem accesssing elements in a hash by 0AP0

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