[Closed] Rotate camera with spinner error

Hi all! I am trying to create a spinner that will rotate the scene camera.

I have this for my code:

 spinner xRot "X Rotation:" range:[-360,360,0] fieldwidth:40 align:#left type:#float enabled:true

--and then

		on xRot changed val do
		(
			rotate $ (angleaxis xRot [1,0,0]) 
		)

I am getting this error when I try to adjust the spinner.

Unable to convert: SpinnerControl:xRot to type: Float 

I thought I did that when I created the spinner?

Thank you for any light you can shed on this.