Hymer cupboard access

[TheLifeofBrian]

Hi all,
does anyone know how to get the top part out of these cupboards above the table in my Hymer T588SL? I need to get at some wiring behind/above it.
I've taken the screws out of both sides but nothing moving & I don't want the whole thing crashing down!!

 

[TheLifeofBrian]

Sorted!
It just needed persuading slightly!

 

[Googlebot]

I was posting that I thought it sits in a channel, seen your reply. Good to know.