And is $ref a typo or your actual code?

Try gnorks advice, and let the offending line look like 

foreach my $key (keys(%$param)) {

[download]
Or try to be more specific in your questions, always mentioning
what
code stripped down to a minimum
where
in the code
which results
e.g. error messages you got
why
Problem you try to solve
(not necessarily in this order and on occasion deeply nested :)

Edit: fixed $% to %$

regards,
tomte

An intellectual is someone whose mind watches itself.
-- Albert Camus

In reply to Re: Re: Re: A dereferencing problem by Tomte
in thread A dereferencing problem by Scarborough

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