[Closed] Query about "with undo"?

I am currently working on a script that manipulates a selected cameras position via a spinner in a rollout floater. However transformations to the camera via the spinner didn’t generate any undo blocks. I resolved this by nesting a “with undo” into the button down event.

This works fine for transforms via “spinning” the spinner, but how can I catch manually entered values?

I tried nesting the “with undo” into the “On spn_CamX changed val” event but this generates hundreds of undo blocks.

I also tried it in “On spn_CamX entered” event but this didn’t give the desired result either.

   On spn_CamX buttondown do with undo "cam move" on
  (
     Currentcam.pos.x = spn_CamX.value
  )
  	
  	
  On spn_CamX changed val do
 (
     Currentcam.pos.x = val
  )
   		
   
   

Any thoughts would be most appreciated.

Thanks,

D.