Let's say that there is a web page contains a vet scene and an external flash file.

I know that I could use external flash file to control viewpoint content and I could test that function after I have uploaded them to a server.

I am just wondering if it is possible to use viewpoint 3d content to control the external flash file. e.g. I click a ball in vet scene and the external flash file will gotoAndStop(5);

Thanks in advance.

Anything you can control using JavaScript in the HTML page, you can also do from your VET scene by scripting out using JavaScript.

This is a good example of something you can easily do. You'd script into your external Flash object using the same method call you would use from JavaScript.