Kangaroo update forces

Hi,

Is there a way to update the forces in Kangaroo. Let's say I want points to repulse each other on a surface, but the repulsion force depends on the z-value. So if a point is moved to the top the repulsion force is low, but if it's in the bottem it's large.

Also, I only want it to repulse the nearest ten points, where the size of the force depends on the distance to these points

Is it possible in Kangaroo, or would you reckon I need to go through C Sharp

Hope you guys can help me out

Timo