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add_action('wp_head', function(){
    ?>
    <script>
        function updatePECFieldRequirements() {
            // Get current values
            var selectedRole = jQuery('#b2bking_registration_roles_dropdown').val();
            var selectedCountry = jQuery('#b2bking_custom_field_1370').val();
            
            // Get PEC field elements
            var pecField = jQuery('#b2bking_field_1444');
            var pecLabel = jQuery('label[for="b2bking_field_1444"]');
            
            var shouldBeRequired = false;
            // Required if Italy is selected
            if (selectedCountry === 'IT') {
                shouldBeRequired = true;
            }
            
            // Update field requirements
            if (shouldBeRequired) {
                // Add required attribute and asterisk
                pecField.prop('required', true);
                pecField.addClass('b2bking_custom_field_req_required');
                
                // Add asterisk if not already present
                if (pecLabel.find('.required').length === 0) {
                    pecLabel.append('<span class="required"> *</span>');
                }
            } else {
                // Remove required attribute and asterisk
                pecField.prop('required', false);
                pecField.removeClass('b2bking_custom_field_req_required');
                
                // Remove asterisk
                pecLabel.find('.required').remove();
            }

            // Set field as visible
            jQuery('.b2bking_custom_registration_container_field_1444').css('display','block');
        }

        // Run the function when page loads
        jQuery(document).ready(function() {
            // Initial check
            setTimeout(updatePECFieldRequirements, 50);
            
            // Run on dropdown or country change
            jQuery('#b2bking_registration_roles_dropdown').on('change', function() {
                setTimeout(updatePECFieldRequirements, 50);
            });
            jQuery('#b2bking_custom_field_1370').on('change', function() {
                setTimeout(updatePECFieldRequirements, 50);
            });
        });

    </script>
    <?php
});