Wild guess: you are using Apache::Registry and your code looks like this: 
my %Params;
....
sub foo {
....
  $page->string($fn, 12, 150, $height, $Params{InvoiceID});
....
}

[download]
In general, this warning means you've created a closure and $Params{InvoiceID} will not change for the rest of the life of your program. That could be bad.

In reply to Re: "Variable will not stay shared" warning by perrin
in thread "Variable will not stay shared" warning by George_Sherston

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