Kangaroo how to fix position of mesh to springs-points?

hello grasshopper people!

can u help me please with small problem? I do dot know how to connect the mesh geometry with square grig, under it. Basically what I want is to connect those parts together, to get same movement for “cubes”.

unnamed.gh (24.2 KB)
Untitled.3dm (88.3 KB)
unnamed.gh (24.2 KB)

Thns for any advices!!!