Rear door issue/wont shut.

[6500RPM]

My rear door would not close, so after searching the forums, I found a post about the snapped micro switch. Dismantled the door, got the latch out, glued the snapped part back together, and reassembled everything, but the door would still not close.
I have taken it back apart, and it appears that the piece of metal, that presses down on the micro switch is not moving. If I press it down onto the switch while operating the latch, the door mechanism catches, and will work, but otherwise, this piece does not move.
I have photographed the part I mean, its the piece of metal I have the white stick pointing at. Is this part meant to move mechanically, or electronically please? Any advice gratefully received.
 

[6500RPM]

Well I ordered a new (to me) lock and it arrived today, all fitted, so not to worry about the above question, although curiosity is still driving me to get an answer, might have to get it took apart.  The new lock I have fitted does not seem to want to work with the soft close of the central locking, but I can live with that at the moment.