crystal report : set image for background of report (watermark)

I want to set image as report background. I insert new section before details-section and insert picture there. and in the Section Expert set "Underlay Following Section" to true. that's worked but my tables remain blew. I also create new report and set it's background and insert the main report as a sub-report inside it. this wa开发者_开发百科y good and the picture remains blew but page headers and other setting dose not work properly. Can someone help me?

I recommend creating a new Page Header section, putting that section to the top (this section should be Page Header *A*), and setting that section to Underlay Following Sections. This way, the watermark image will appear in every page, and will be the first thing in every page.