Hola Domenico
in business_logic, in function build_details_table)...
[pre]
right under:
$field_to_display = get_field_correct_displaying($field_values_ar[$j], $fields_labels_ar[$i]["type_field"], $fields_labels_ar[$i]["content_field"], $fields_labels_ar[$i]["separator_field"], "details_table"); // get the correct display mode for the field
modify if condition for:
if ( (($show_label_of_an_empty_field==0) && (strlen($field_to_display)>0)) or ($show_label_of_an_empty_field==1) ) {
and add:
// display the label of an empty field in the details view
$show_label_of_an_empty_field = 0; // values 0 = no and 1 = yes
to your config.php
[/pre]
Hope it helps