[Closed] As the Array can be CustAttribute parameters??

Arrays in parameter blocks are called Tabs. They are statically typed though, so you’ll have to specify something like #IntTab, #StringTab, and so on.

Or:

(
	--based on code by denis Trofimov
	fn applyObjectData node theArray:#() = if isvalidnode node do
	(
		str = "attributes objectData 
		(
			rollout paramsRollout \"Parameters\"
			(
				dropdownlist nodesDd items:% pos:[0,0]
			)
		)
		"
		ss = stringstream ""
		format str(with printallelements on theArray as string) to:ss
		objectData = execute (ss as string)
		free ss
		custAttributes.add node objectData baseobject:on
		select node --return the node as $
		max modify mode -- now the rollout was created the first time	
	)
	local myBox = box(); myBox.name = "theBox"
	local myArray = #("test1","test2",(3.14 as string),myBox.name)
	applyObjectData myBox theArray:myArray
)

Everything you store in the array will have to be a string, but you can cast the strings back to their original data types, if that information is available.