How do you replace the boot lock on a 2002 Volvo S60? on 2002 Volvo S60

Have progressed to unbolting existing lock and connected up the electrics but having trouble with dis-connecting cable.

Asked by for the 2002 Volvo S60
need more info to help
Can you go through step by step to replacing the boot lock then I`ll get it right.

In anticipation many thanks