How to appear offline on Facebook chat app (iPhones)?

[littleblue]

When I use Facebook on the computer, I'm able to choose whether I'm offline/online and also which people can see I'm online. I can't seem to find any option to do this with the iPhone app? Any help would be appreciated.

[Md]

you hit the list button then go to apps then go to chat then it the offline button in top right corner then you will appear offline
Source(s):
that's what I don't on my touch