Get parameters from GUI mail handler plugin

[aas]

I try to create mail handler plugin folowwing this tutorial  https://developer.atlassian.com/server/jira/platform/creating-a-custom-mail-handler-for-jira/  I can't get parameters in class EditDemoHandlerDetailsWebAction.java, which I add in to the form, when I try to create new mail handler. But I can get parameters when I try to edit already existing incoming mail handler, in that time I see parameters in copyServiceSettings method. Do I need override some more methods of AbstractEditHandlerDetailsWebaction class or something else?   Unfortunately I can't add code of my  EditDemoHandlerDetailsWebAction class because message marked as spam( Any help will be very important, thanks.