Installing play framework

Question

I am on windows 7 and I am trying to install play framework.

I created the environment variable in system variables with
variable name:

Answer 1

Muhammad is correct. The only thing I would add is this: After saving the environment variables, I noticed that one must:

1. close ALL explorer windows
2. open a new one
3. open a new cmd prompt

and then I saw the play_home in the path and play worked everywhere. For some reason, updating the environment variables didn't refresh existing windows.

UPDATE:
If you're in a hurry and feeling rebellious, open a cmd prompt window first, then kill explorer.exe, then restart explorer.exe in the cmd window.
That should refresh everything but be careful...