Print Condition of a margin object

Question

hi,,
i want to set the 'Print object on' to Last Page' of oa margin object.
Actually i want to duplicate a report field for (F_1_Emp_name), on margin just besides page number field
and that duplicate field (F_1_Emp_name1),should be only on the last page.
For this, i have created a formula 'CF_1_Name1' outside all the queries groups.
i added a feild 'F_1_Emp_name1' on my report layout inside margin and set its Print object proprty to 'Last Page'.
but it gives error - 'F_1_Emp_name1 has an Illegal print condition'
Kindly suggest. TY

Answer 1

I don't know if there is an easier solution than this one, but I don't think so. The problem is that the total number of pages is know after formatting. There is a Total pages as a source for a field, but this can't be used in a program unit.
1. Create a dummy query, like
select 1  dummy
from dual2. Create a package spec:
PACKAGE pkg_globals IS
  totalPages number(3);
END;2. Create a repeating frame and field for this dummy at the end of the report layout.
3. Create a format trigger for this frame:
function R_1FormatTrigger return boolean is
begin
  SRW.GET_PAGE_NUM(pkg_globals.totalPages);
  return (FALSE);
end;4. Create a format trigger for your margin field:
function F_1FormatTrigger return boolean is
  pagenum   number;
begin
  srw.get_page_num(pagenum);
  if pagenum = pkg_globals.totalPages then 
    return (TRUE);
  else
    return (false);
  end if;
end;