Regular Array around a diameter using entered parameters

Our company has a circular truss that has lights around it. We are trying to make 3D examples of it for each quote.

I have worked out how to do an array of objects (lights), what I would like, is to be able to change the radius of the truss and the number of lights on the truss by changing some numbers some where.

So I want to be to enter in the radius in mm of the truss and then the angle or number of lights on the truss in the array and it will change the model on the fly. Is this possible in Sketchup?

Yes it sounds possible with Dynamic Components. You could have a formula to calculate how many lights you need and distribute them around a circle.