I’d just change the last line to this:

 

I'm having difficulty multiplying. I simply want to say, for example "SCALE * [2,2,0]"  but I get the error "Expression problem: Bad method arguments: one argument to mul() must be a scalar."  What is wrong with my syntax? If it matters below is the full expression i'm using

cam = thisComp.layer("camera 1");
distance = length(sub(position , cam.position));
s = distance / cam.zoom;
scale* [s,s,0];