Rotate UVWmap by view angle of viewport

Ok know i have tried to make it, it works but just for the first rotation, i dont know why :(
does anyone has an idea?

Rollout Uvrotroll "Rotate Uvwmap by viewangle"
(
fn Uvwmap_Rotate rotdeg =
	(
	if selection.count == 1 do
		(
		perspview = Inverse(getViewTM())
		perspdir = perspview.row3
	
				Gpersp = #(dot perspdir [1,0,0], dot perspdir [0,1,0], dot perspdir [0,0,1])
				Waxis = finditem Gpersp (amax Gpersp)
				Saxis = #([1,0,0],[0,1,0],[0,0,1])
				if Gpersp[Waxis] > 0 do rotdeg = -rotdeg
				
				for node in selection where isProperty node #uvwmap do
		(

			 node.uvwmap.gizmo.rotation = (angleaxis rotdeg Saxis[Waxis])
		)
		)
	)
	
	
	button rccw "rccw" pos:[5,10] height:20 width:35 
	button rcw "rcw" pos:[45,10] height:20 width:35 
	spinner rotsp "Deg" range:[0,360,90] fieldwidth:40 scale:1 pos:[85,12]
	

	
	on rcw pressed do if selection.count > 0 do undo on  Uvwmap_Rotate rotsp.value
	on rccw pressed do if selection.count > 0 do undo on  Uvwmap_Rotate -rotsp.value

)



createdialog Uvrotroll

Shouldn't it be like this?

node.uvwmap.gizmo.rotation *= (angleaxis rotdeg Saxis[Waxis])

Thanks, now it continues the function.
But if i rotate it from the Side and go to the topview its changing the axis.