AFOpenVpnService Class Where does I find cutom port for connecting. Hotspot Shield VPN

I de-compiled hotspot-shield.apk vpn. I have jar. I have classes. I found vpn.ovpn entry in com tree. And vpn.ovpn I found this. vpn.ovpn I tried hard but i coudn't able to find any block where i can modify something to get vpn connected at only udp port 53. The PC version of hotspot-shield can do easily. Any one help me in modding this As I have no working knowledge of JAVA. And learning Java then Android App building will take hell of time