Download two files with ExtendedWebViewer?

When I need download one file I use ExtendedWebViewer and when download finished launch an event.

Well, now I need download two different files. I try use two ExtendedWebViewer, but it doesn’t work fine.

How can I download two files and then launch an event like ExtendedWebViewer?

Well, with File extension and .savefile I made it!
I’ve chained a .savefile/gotfile with another .savefile/gotfile.