To create the truss cell, you should create a new model. The model type is preset as "3D."
Activate the "Optimization & Costs / CO2 Emission Estimation" add-on. This two-part add-on finds suitable parameters for parameterized models and blocks using the Artificial Intelligence (AI) method of particle swarm optimization (PSO). Moreover, this add-on estimates the model costs and CO2 emissions for the structural model.