Is the sun affecting my head

, how is the part that catches the cable release has the spring and the big washer attached to the boot lid ?? came home after a quick nip to the shop to find the boot lid and that part detached

no sign of a nut /fastening inside the actuall boot lid housing

. Rooted about in the boot to see if a nut had dropped out but nothing.
The cable release part is working fine
Noops