Can't find Disable FOP option in Settings -> Advance Settings in the new Distro

I am new to distro trying to pass my solution from trixbox to distro. I can’t have a fop panel :S. I tried to find out the Disable FOP as it is explained in Advance Settings but nothing. Is it possible to have a free flash operational panel in distro? I am having trouble with iSymphony too.
Thanks in Advance

I found: FOP Web Root Dir
But i can’t change the value from isymphony to fop2.
How can I do that?

just make readonly settings override true before in order to change it