Hey Denis, Thanks, i'm using the old version for this scene now, because my scene is very heavy and my computer slow. When i press play i have to wait literally 2 minutes until it starts. The same when i stop it, so testing is very exhausting and the old version looks pretty decend for what i want. So, the day-night cycle is running very well, but i need to interact and pause it or continue it when paused at the same mark. So like a pause button on the videorecorder, freeze the cycle with a click and with another click keep it going further. Is that possible and can you help me with that code for 4.1.2? Thank you again!