Feedback loop in solver

I’m trying to compute the force between two points based upon the distance they are separated. For this I used the step solver in kangaroo and got the result after one iteration. I now need to use the result of this iteration to change the distance between the points. However this results in a feedback loop which is apparently not possible to simulate in kangaroo.
So in short, is there any way to use the output from the first iteration as the input for the next iteration?

Zombie Kangaroo solver + Anemone.