How to run a powershell script from neko haxe?

I need to run a powershell script from haxe code and return data. I will use this data in my code.

How I can do this?

You can run a sys.io.Process from Neko.

Check out the api docs
http://api.haxe.org/sys/io/Process.html

To see an example of how to use it, check this
http://code.haxe.org/category/macros/add-git-commit-hash-in-build.html

In your case it would look like this

var process = new sys.io.Process('powershell', ['any parameters']);

Note: I'm not sure if you really need powershell since you can execute stuff commandline with this.

I hope this helps!