Toggling Issues in ME21N

Hi all,

I have a requirement.

In Transaction ME21N, i have added some custom fields in a custom Tab.

The problem is that, while toggling, it's showing probllems.

When i go to ME22N and toggle, the custom fields are still showing in edit mode. The same persists for ME23N but in display. How do i solve this?

What code should be written and where??

Regards and Thanks in Advance.

Steven