DC5R tailgate help!

Does anyone know how to remove the black pplastic underneath the tailgate to get access to the tailgate locking actuator motor? Its fried and needs replacing. Bought a new one but cant work out how to take this thing off. I took off a screw, in a recess to the left of the lock. Couldnt find any other screws. Tried to pop it off but it looks like its gonna break. Much appreciated to anyone that can shed some light on this

Could you possibly take a photo to explain better as im abit lost in what ur after dude :)

Cheers