Scale geometry(polysurface)?

Hi everyone!

I am new to grasshopper and I am trying to scale a shoe last model (reduced mesh converted to polysurface) at origin point as a part of my whole grasshopper algorithm. I created a point at the origin and assigned it as the center point and assigned the last as a geometry in grasshopper. However, when I adjust the scale factor from 1 to 0.5 using a slider the geometry did not scale. I tried it with a simple box and it did not work either. There is no error showing so I am wondering why?

Thank you for your help!

Scale.3dm (21.4 KB) (1.5 KB)

This is what I am actually trying to scale:

sorry guys I was just dumb…I did not set the slider range correctly…now it works