Hi peter.jak,
A possible solution is to create an Angular Component with the AsyncPipe like the one shown here and create/append it dynamically to the target Smart.MenuItem when the Smart.Menu is ready. This should be done on ready because custom elements generate their inner HTML structure dynamically. Binding to onReady is as simple as binding to onClick:
<smart-menu-items-group (onReady)="handleReady($event)">...</smart-menu-items-group>.
Best Regards,
Christopher
Smart HTML Elements Team
https://www.htmlelements.com