Looking for a fix on unlocking the right rear folding seat

[next2normal]

Howdy from NZ new member and owner of a 2006 avensis  facelift 2l petrol wagon/estate

well chipping away at some things that need doing fix some with the help of reading the posts ect.

well looking for a fix on unlocking the right rear folding seat

The button was broken but the metal rod was there, i push it down and it open the seat,

great but the the black plastic and rod came away and like a dork i closed the seat and now locked u

i got a tiny camera on lead so can see in there, i see a shiny pin which looks like what needs to be moved

anyway is there a release other than from the top,

or a fix, i looked at back of other seat, don't want to go ripping backs off

thanks in advance, also my dome light still not working other lighs are not door, have but tape over back of refector to stop the earthing out for fuse blow ..cheers again