oggleModalTreeNode('subbiercategory-${subbiercategory.id}')">
                    <i class="bi bi-chevron-right tree-chevron" id="chevron-subbiercategory-${subbiercategory.id}"></i>
                    <i class="bi bi-folder2 tree-icon subbiercategory-icon"></i>
                    <span class="tree-title">${subbiercategory.name}</span>
                    <span class="tree-count">${subbiercategory.device_count} devices</span>
                </div>
                <div class="tree-content" id="subbiercateg