my $without_number = [ grep { $_->{object}->partnumber eq '####' } @{ $self->controller->data } ];
map { $_->{object}->partnumber('') } @{ $without_number };
my $without_number = [ grep { $_->{object}->partnumber eq '####' } @{ $self->controller->data } ];
map { $_->{object}->partnumber('') } @{ $without_number };