Hi , I create master report and five sub reports , for any simple report in my project i used JRResultDataSource to fill report as query SELECT EMPLOYEEDATA_VIEW."EMP_CODE" AS EMP_CODE, EMPLOYEEDATA_VIEW."EMP_FULLNAMEAR" AS EMP_FULLNAMEAR, EMPLOYEEDATA_VIEW."EMP_BIRTHDATE" AS EMP_BIRTHDATE, EMPLOYEEDATA_VIEW."EMP_SERIAL" AS EMP_SERIAL FROM "HRMS"."EMPLOYEEDATA_VIEW" EMPLOYEEDATA_VIEW where emp_code in ($P{emp_codes}) my problem in sub report how fill sub reports for more employees . and how make report connection in sub reports as datasource or report connection . i attach the master report is employee detail and sub reports .