[quote="tecbug":38qpuy0z]Hehe, i know that
My question was about locking layers from event sheet editor (as an action).[/quote:38qpuy0z]
Locking layers is relevant for editing the layout in Construct. Whether a layer is hidden or locked makes no difference for the runtime. So of course there's no action for it.
What exactly are you trying to achieve? Maybe we could help out with more information at hand.