[Closed] Custom Attribut and Lightlister ???

Hi!

I have a problem with a custom attributes on a assembly (lightswitch), which crashes the lightlister with the message “–Unable to convert: undefined to type: color”

Is it my code or is it the lightlister?

 global testassembly = attributes testassembly
  attribID:#(0x2ce7da19, 0x774b9df2)
 (
  parameters main rollout:prop
  (
 	light_on type:#boolean ui:light_on_check
  )
  
  rollout prop "Custom attribute"
  (
 	checkbox light_on_check "Light On" checked:true

 	on light_on_check changed i do 
 	(
 		for a in $ where (superclassof a == Light) do
 		(
 			a.on = i
 		)
 	)	 
  )
  
 )
 
 -- run next line with a selectes assembly:
 -- custAttributes.add $ testassembly