foreach my $subfield ( $fieldfrom->subfields() ) {
foreach my $field_to_update ( @fields_to ) {
if ( $subfield->[1] ) {
- unless ( $field_to_update->subfield($subfield->[0]) ~~ $subfield->[1] ) {
+ unless ( $field_to_update->subfield($subfield->[0]) eq $subfield->[1] ) {
$modified++;
$field_to_update->update( $subfield->[0] => $subfield->[1] );
}