How do I change an open firewall port?

I tried to add a port, by clicking the %26quot;add a port%26quot; thing in the exceptions tab, but I typed the wrong address. Now it won't let me enter the correct address because it says it already has something at the incorrect address.How do I change an open firewall port?Add a new port with correct address and then, go in and remove the incorrect one. If you can't remove it, go ahead and block the port.How do I change an open firewall port?Remove the port ist and then add new one....