How to change SSTP port

Hi guys

I was reading this Article and it says I can change SSTP port through regedit.

There are number of questions I want to know.

1. I change it through regedit and I know that in the exact same place that I can change sstp port in server 2008 r2 i can do that in win7 too but after changing that the connection didn't work.
2. After changing that is there any other steps I need to do?