Reverse Attractor Points HELP

Hi Guys

Is anyone able to help me with this problem?

I am trying to move points along the Z axis based on their distance from an attractor point.

My goal is to have 4 MD slider attractor points set up - and with a surface that pushes away from the points nearer the attractors (reverse attractor creating peaks instead of toughs in the surface) rather than the normal attraction.

Currently I have the points nearer the attractor move the surface away the attractor - currently it is pulling the surface towards downwards. I want it to push upwards, creating a peak in the surface instead of tough.

Note I have been able to get this working with one attractor but Not multiple. See attached photo of how I want it to function

ANYONE PLEASE HELP??