Adding path costs to nav links, when AI paths using them

I have currently set up nav link proxies that let my player jump, i am using custom path following component and a custom nav area for the jump.
To discourage multiple ai from using the same nav links at the same time. (and not queuing the ai behind each other), i wanted to increase the path cost of a nav link when an Ai has plotted a path through it.

Did you ever find a solution for this? I want to do the same, i.e. increase the costs of a link to force the AI to use them only in rare cases