Runtime Parameter in Report Builder 6.0

Question

Hi Folks,
I'm trying to build a report in which at runtime the user should have the option of limiting the number of records per page. I know one can do this at design time but I would like to have the option for the user at run time that he or she should be able to limit the number of records per page after running the report and seeing the output in the live previewer.
TIA
Hassan

Answer 1

Create a line with a "page break before" set. Then use a format trigger and a Pl/SQL package variable to determine when this line is printed (if at all). When it is printed, you will get the page break you require. When it overflows onto the next page the trigger will again execute and return false so the line is never actually printed.
eg:
- PL/SQL package
PACKAGE globals IS
numLines number(10) := 0;
END;
- Before Report Trigger:
function BeforeReport return boolean is
begin
globals.numLines := 1;
return (TRUE);
end;
- Line format trigger
function B_1FormatTrigger return boolean is
begin
if (globals.numLines = :p_1) then
     globals.numLines := 0;
     return (true);
else
     globals.numLines := globals.numLines + 1;
end if;
return (false);
end;