3482700 - Custom Attribute Filter is not picking up custom attributes on tasks for Process Model Dashboard in Collaboration Hub

Custom Attribute Filter in Process Model Dashboard is not picking up custom attributes on tasks.

The filter supports the attribute types single-line text, multi-line text, dictionary link, date, number and boolean on diagram level.
Custom attributes assigned to tasks are not supported. 

See related user guide for more details:
https://help.sap.com/docs/signavio-process-collaboration-hub/user-guide/how-to-use-process-model-dashboards

KBA , BPI-SIG-HUB , SAP Signavio Process Collaboration Hub , Problem