[Closed] Linking VRaylights' power to a dummy's position

I have an array of VRayLights and i’d like to animate them somewhat like this:

if ( light.pos.y > Dummy.pos.y) {
	light.power = 1200;
 } else {
	light.power = 0;
 }

I don’t really know how to do this in practise. Should I make a maxscript, use the wire parameters window, make a Float script or something else?
Also, i’ve got 51 lights in total and it’d be nice if I didn’t have to apply the script to each light by hand. There’s only one dummy though.