Yun WiFi client mode & static IP all at once

Hello,

I understand the configuration on Yun's initial setup page. It's acting as AP at first, then we select the target SSID and restart into client mode. My problem is my target SSID network is not DHCP enabled (and will never be). When Yun connects to target SSID, I couldn't communicate with Yun through my phone anymore. It's not getting the IP and I can't not connect to Yun. The network administrator only gave me one static IP address for Yun. It has to connect to one of the Access Point with static IP. Can someone direct me how to setup the Yun's wifi in client mode with static IP? The advanced configuration page is confusing. I tried without any success. Thanks in advance.

Poting