Hi Klas!
thanks for your reply,
I have been trying to do that but it is not working, may be I am not understanding the "restriction".
I have added a field in the form and want this field to be added in the form only for the first submission.
when editing, this field should not be there in the form.
I tried it in the form & content type by clicking "4" (access+restriction) then the field's restriction option I chose "workflow" then + and action= add.
but the field is still available in the editing form.
Please guide if I am missing something.
Best Regards.