to avoid blank page

In Jasper Reports,I am having one parameter,thats Receipttype ..Receipt tyape mean Manifest,Nonmanifest,Both.f i gave manifest Mean Maniefst datas will be printed and,if i gave Nonmanifest mean nonmanifest datas will be printed and if i gave Both mean Manifest and Nonmanifest datas will be printed.I called both reports in main reports,In this palce i gave Receipt typa as both mean,here manifest datas will be printed in 2 pages and Nonmanifest will be printed as next page,so here i gave split allowed option as false but in this place manifest datas is not coming mean it will printed as Blank page.I want to avoid this blank page.please reply to my question.