I had to do something similar but i used a movieSceneFloatTrack in order to animate the visibility overtime. In order to bind/link, I found that you need to know the property_name and property_path. To do that, I manually added visibility, drilled into the object and looked up what the property_name and property_path was which was bHidden…The following should work with pure code. Make sure you save and reopen the levelSequence to see if it worked.