Hello Rishu,
Thank you for your reply.
We have an existing example here that splits up the measurement count: Count measurement Tool - multiple counters - #3 by ychen
If you have the selected annotation filter for the tag defined in your custom property, you can split up the count that way. This code would need to be refactored for that however.
Regarding the panels, you may have to create your own custom panel and have that component update based on the getAnnotationsList(). More information on creating a custom panel can be found here: Modular UI Panels | Apryse documentation
Alternatively, you can use a custom modal defined here: Apryse WebViewer Namespace: UI
Regards,
Luke