I did it finally sudo apt-get install network-manager-openvpn-gnome
sudo apt-get install network-manager-openvpn network-manager-openvpn-gnomesudo apt-get install --reinstall network-manager network-manager-gnome network-manager-openvpn network-manager-openvpn-gnome
sudo service network-manager restart killall nm-applet nm-applet & this is what need to done