Generate simulation points on a surface

hi, everyone. I’m using physarealm plug-in to generate a simulation like this.example
I don’t know what’s happen to my file, it just failed to simulation and I have check many times still don’t know why. here are my files. generate facade on a (17.0 KB)
surface.3dm (55.9 KB)
anyone could help me? thank you very very very very much.