Good day Friends,

I am very new to Grasshopper and so am finding it hard to get this thing going...I have a surface, made a grid on it, made an attractor point, made lines on each individual point of the grid in the Z direction...Now these lines dance with the attractor point. This all is fine...But How do I make a surface using all these points such that the surface morphs to the changing lengths of all these lines and kind of gives me a dynamic system. I am attaching my GH definition. Please make any regular surface on Rhino...What I am actually going for is a surface that changes itself in response to the attractor...Please help guys !!!