- if ( defined ( $filter_value ) ) {
- $additional_field_filters->{ $field->{name} } = $filter_value;
+ if ( defined $filter_value and $filter_value ne q|| ) {
+ $additional_field_filters->{ $field->{name} } = {
+ value => $filter_value,
+ authorised_value_category => $field->{authorised_value_category},
+ };