athomi

Thank for your answer. As far as i can tell, they show or hide the hole object not only the light itself. I'd like to control only the light itself.

Is there a way to control the light level especially of runways? (ON/OFF or even better several different intensity levels) I tried the ATTR_lights_level controlled by a custom dataref. I added the statement "ATTR_light_level 0.0 1.0 own/dataref" to Resources/default scenery/sim objects/apt_lights/slow/elevated_edge_WW.obj (didn't changed the objects light definitions) and toggled the dataref state between 0 and 1 but i didn't got any reaction. Where's my fault?