Seems quite simple to select a file using webworks, what's not so simple is to select a folder, any one managed this?
I guess your answer is correct - you CANNOT select a folder using websworks, the method I used was to select a file in that folder, get that the location string of the file and remove the file name.
Obviously, if you don't have a file in that folder, it doesn't work.
Sucky, sucky.