Basic Octopus Help

I am trying Octopus for the first time; all of the tutorials and previous posts seem to have older components that make it so that the Octopus component does not load, proving to be unhelpful for me.

I have a script attached in which I want to find the optimal parameters to return a geometry of a desired volume and desired surface area, or at least very close to them.

I have connected variable parameters to the Genome input and the resulting area and volume to the Octopus input. In the phenotype I've put the resulting Brep. 

Each time I run Octopus it freezes. Also, I don't understand how to specify what I want the volume and area to optimize to. It seems like this can be done though. Help!