Analyzing cantilever structural element in Millipede

Hi,

I try to analyse a simple cantilever structure in Millipede. I set up the model components: boundary region, load region, but I have a problem with the support region. The brep that I try to input to the support region fails to convert it into curve. If I use a brep edge component it processes both inputs and the Tropostruct 3D components shows that collects two data and its not simulation the optimization. 

Does anyone had the same problem with Millipede? I am trying to achieve the same result as in the image below.

I am attaching my Rhino and Grasshopper file. Thank you in advance.