Can anyone tell me what I'm doing wrong?

You aren't capturing or using list context. You are assigning a boolean to $map which answers "does this match?" Try:

my ($map) = $traps{$trap}{oid} =~ /(\d+)$/;

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-sauoq
"My two cents aren't worth a dime.";

In reply to Re: RegEx problems by sauoq
in thread RegEx problems by Anonymous Monk

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