Hi Everyone,
While trying to do some development around overriding a method, getting an error while trying to override a method on my custom form

I tried to override the standard method 'Selection changed' of a 'FormListViewControl' on a form with my own 'RegisterMethod' but got the above error.
Then I tried to create to create one custom method in the FormListViewControl itself and tried overriding that. But getting the below error in that.


Please suggest what exactly I'm doing wrong here.