Hi, the script: 
use strict;
use Data::Dumper;

{
  my( $key ) = 'Statistic::Test';
  my( $val ) = [ 1, 2, 3, 4 ];
  { no strict 'refs';
    ${$key} = $val;
  }
  print Dumper( $Statistic::Test );
}

[download]
outputs 
Name "Statistic::Test" used only once: possible typo at ref.pl line 12
+.
$VAR1 = [
          1,
          2,
          3,
          4
        ];

[download]

Is there another way than using "no warnings 'once'" to avoid the "used only once" warning?

Thanks for your help!

In reply to "used only once" for symbolic references by irata73

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