Domain redirection problem in nginx

Hi,

I have 2 domains (domain used here is just example), helloworld.my and helloworld.com.my I want to redirect:

A. helloworld.my to www.helloworld.com.my B. www.helloworld.my to www.helloworld.com.my

I managed to redirect the A But i cannot make the B works. Below is my nginx config for hellworld.my

server { listen 80; server_name helloworld.my; return 301 http://www.helloworld.com.my$request_uri; }

server { listen 80; server_name www.helloworld.my; return 301 http://www.helloworld.com.my$request_uri; }

Anyone can help me?