...reduce the thickness of a 3D layer in studio 7? (solved)

[Honacloi]

I'm trying to create a 3D house, but every time I try changing a wall to 3D as an extrude, it makes it 3 times the thickness.

Have thus far been unable to find a solution in the tutorials/help. I could be blinded by frustration but any help would be appreciated.

[Honacloi]

I have tried changing the 'thickness' in the style window but it doesn't change a damned thing

[Honacloi]

Just to update, I find that I can adjust the thickness if I do so before I create the layer.

However I have now created most of the superstructure of the house - it was a lot of intricate x, y and z'ing that I would rather not repeat if I don't have to.

Chances are I am missing something, most of my problems with AS are caused by my error rather than the program's. If you know what I am doing wrong or if you know a quick fix, please let me know as this is really stalling me.

[Honacloi]

Solved, many thanks to ulrik

I was not selecting the shape, just the layer.