Defining own support not working

Hi there,

I am a student doing an assignment. I am trying to structurally analyse a few different patterns for a concrete roof structure. The patterns are 2D meshes and I am defining my own support (see script). However, because I split the model up in 2, it cannot define the support. I am not a pro with grasshopper and I have tried a few different things but failed. Perhaps someone could more easily tell me how to solve this? Thanks!
CI karamba script.gh (37.2 KB)