How to add is_read(status) field in the filter menu option of list view in Notifications module

Hi All,

             I was trying on adding the is_read(status) field in the filte options of the notifications module

I have tried by adding the below code



This was adding the status field in the filter menu of the list view in notifications but removing the existing options.

Can any once please help me how to go with it

Mehul  Bhandari David López Angel Magana Ramana Raju Santhana