Hi all, I've searched the forum and how to create a flickering light has been answered a few times, resulting in this expression that I'm currently using... pointLightShape1.intensity = rand(0.5,1.5); Unfortunately, generating a new value every frame looks unnatural (and is epilepsy inducing!). So, I'm after an expression which generates the new intensity value every random number of frames (between 5 and 15, say). I've come across expressions which will change the value every set number of frames (e.g. every 5 or 10), but this looks unnatural. So is there a way to do this? I'm fairly new to Maya and struggling to get my head around the MEL stuff!