Rest Pot Owners Can not filter based on Process Name

Dear,

We want to filter below query based on process name, But it doesn't allow to add this filter instead it is fetching based on Task Name.

http://localhost:8080/kie-server/services/rest/server/queries/tasks/instances/pot-owners?groups=test&page=0&pageSize=10&sortOrder=true&filter=Fill_Application

Regrards,
Abhay