Hi, I've been playing around with vellum workflow and when I tried to make a simple animation of few balloons being attached to the ground by a string I ran into one issue.

1. Easy way to apply lift force was simply setting gravity force in vellum solver to positive, but I can't find a way to apply separate force to the string itself (I want the string to have weight pulling down opposed to balloon lift force).

I would really appreciate some help and tips for more realistic looking simulation, tank you all in advance!