regular expression match problem

[Pine Yan]

This is a segment of code to do string search:

my $email = "\pineyan";
my $name = "\\pine";

if($email =~ /($name)/) {
        print "Found my name: $name!\n";
}

and I got the following error when running:

        Can't find unicode character property definition via main->i or
i.pl at unicode/Is/i.pl line 0

How can I get this match work?

Sincerely
Pine