@ryecoaaron thanks man, no big deal, actually, after I tried to make the command through command line I understood what was going on, I just thought to share the webgui "issue" not warning you, so newcomers and non commandline expert can troubleshoot it better.
Anyway thanks for the headsup on omv extras.org I knew that, but there is no wiki for the plugins, I was looking more for something like that for the various plugin, I guess there are not much man power for it, apart from some guides on this forum, so I would like to partecipate and give you my help for it, if you will ever decide to create something like that in a "more official" way, I would be honored to give something back to this project
While we are at it, I just would like to ask you a question without open a new thread, just for curiosity, the most painful aspect of reinstalling omv to me it's reset the firewall rules for the new build etc, mostly because the repetitive task to add port one by one, and when you start to playing around with your omv box the list can became quite long, I was wondering is it difficult to implement a button on the omv firewall to be able to load\save iptables configuration?!
Like a couple of button for iptables-save > file.conf and iptables-restore < file.conf, because unfortunately doing this through the terminal of course does work, but the ports will not be displayed in the gui aswell, so not very useful, I was wondering if could be implemented in the gui directly, but I don't know how much work this is though, just asking out of curiosity