After reading some tutorials, I created sample report using subreport, but there is one big problem. When I preview subreport, it`s working, but previewing main report show blank space instead of subreport. How to fix it please ? 1) Both reports have same database. 2) Report Connection parameter is set 3) Subreport is in same folder 4) Parameter created in properties and passed from main report, in SQL used /name/ = $P{nameOfParameter}