What to add in Report studio to make bookmarks appear in PDF report?

I have a 6 page report in Report Studio 10 and I want these 6 page headings to appear as bookmark items in the navigation pane when report is run as PDF. Bookmarks option is only available in Adobe Pro in the navigation pane. I tried creating report studio bookmarks for each of my pages and put them on the first page and opened it in Adobe pro but the bookmarks didn’t get translated to Adobe bookmarks. They appear as links in first page. Adobe says normally Table of contents translate to Adobe boomarks so I tried that creating the report using table of contents in report studio but this also doesn’t translate to Adobe boomark items in the navigation pane. What to add in Report studio so that they get translated to Adobe Bookmark items in teh navigation pane for PDF reports?

Thanks for your help!