Ah how could I not have gotten
I am trying to make a 3D mesh/matrix/box with strings hanging at even, 10 inch intervals in the x/y planes, where I can control the heights of the end of the strings in the z-plane using Grasshopper control sliders, if that makes sense. I thought I might need Kangaroo to do it.
From
reference to basic tutorials on 2/3D mesh building
And to know the solution was surfaces when asking about meshes
dynamically controlled surfaces using graph mappers
This may help you in the future: