How to print to PDF directly from Reports

Hello,

I am calling a Oracle report from Oracle Forms. I want the report to be generated directly in PDF and displayed. How to do that?

Thanks

I got the solution for that
* DESFORMAT could be HTML, HTMLCSS or PDF here*/
SET_REPORT_OBJECT_PROPERTY(report_id,REPORT_DESFORMAT,'HTML');

But,when i run the report from forms, the report sucessfully runs and opens a PDF,but upon closing the report pdf, i get an error in Oracle Forms FRM-41219: Cannot find report:invalid id

why is that, it can find that report and is running it. can anybody tell me why.

the code in the forms is
Declare
pl_id paramlist;

begin
pl_id := CREATE_PARAMETER_LIST('rep_paramlist');
RUN_PRODUCT(REPORTS,'C:\acctreports\test',SYNCHRONOUS,RUNTIME,FILESYSTEM,pl_id,NULL);
SET_REPORT_OBJECT_PROPERTY('c:\acctreports\test',REPORT_DESFORMAT,'PDF');
end;