select all objects with vraylight materials (incl. if its part of multi/sub mats)

awesome, thank you so much

You can use this:

(
	UpdateSceneMaterialLib()
	local vrayLightMtlArr = #()
	for m in scenematerials do join vrayLightMtlArr (getClassInstances VRayLightMtl target:m)
	makeUniqueArray vrayLightMtlArr
	local refnodes =#()
	for m in vrayLightMtlArr do join refnodes (refs.dependentNodes m)
	makeUniqueArray refnodes
	if refnodes.count>0 do select refnodes
)

working 100% :D