Bookmark Tree Structure

Hi Guys,

Great Product! Just tinkering with a couple of options and was wondering whether there is the ability to create a tree structure for bookmarks??. Currently it just places each bookmark underneath the next. Is this something that can be created?? I could not see anything looking at the com whether it is possible.

Can someone kindly indicate whether or not it is possible, and post some example code that would enable me to do this??

Currently using foxit pro as my pdf viewer.