How to rotate scene object based on x,y,z coordinates

I will use this post and remove the other. Yes i want to set z up. but when i do scene.up.set(0.0.,0.0,0.1) nothing happens. everything is the same.

is it also correct to use scene.rotation.x = -90 * Math.PI/180; ? to rotate the x 90 degress so z points up?