Is there any reason why you can't just use push(). After all, is that not the whole point of tieing a file to an array? 
use Tie::Array::CSV;
my $filename = 'tied.csv';
tie my @file, 'Tie::Array::CSV', $filename;
push(@file,[4,5,6]);
untie @file;

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In reply to Re: Append lines to csv by tangent
in thread Append lines to csv by stangoesagain

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