Any One Can Help Me On How To Add Print Code In Form 10g To Run The Report From The Form?

am adding my print button and i have add this code
declare
p paramlist;
begin
p := get_parameter_list('pname');

if not id_null(p) then
destroy_parameter_list(p);
end if;
p := create_parameter_list('pname');
add_parameter(p,'P_emp_svc',text_parameter,:ADMEMPL_SVC_NO_PK);
add_parameter(p,'parmform',text_parameter,'no');
run_product(reports,'D:\PMS_PROJECT\Emp_SVC_Reoprt',synchronous,runtime,filesystem,p,null);
end;

and when i run it i got error message run_product no use anu moer use RUN_REPORT_OBJECT
i need help in this