First of all thanks for not posting database dump ;)

It looks like @ref_Computer is empty. It's possible that John Doe doesn't have the computer. You can check content of @ref_Computer using Data::Dumper.

P.S.: How do I post a question effectively?

In reply to Re: Trouble with an array inside a format call by zwon
in thread Trouble with an array inside a format call by vendion

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