DrayTek 2710n Firewall --> Filter --> single ip not editable

[zillah]

Hi Expert

Recently I bought DrayTek Vigor 2710n and when I tried to change source ip and destination ip to suit my requirement under Firewall --> Filter Setup, it was not editable ( can not be rewritten )

please see the snapshot below :

http://img84.imageshack.us/i/forumfirewall.jpg/


http://img211.imageshack.us/img211/7067/singleipaddressisgrayed.jpg


What I am looking is to be able to type in an ip address as shown in the image below ( this is from Vigor 2820 not from mine 2710n)

http://www.experts-exchange.com/Hardware/Networking_Hardware/Routers/Q_26594395.html

http://img233.imageshack.us/i/blockrule.jpg


Thanks