Would someone be able to make a Kill Switch script that works with x3mrouting ?

[ComputerSteve]

So the problem is that currently when the router reboots, or you stop the vpn client. Devices that are policy routed through the vpn using vpn director still retain internet access. I have tried the script located at https://www.snbforums.com/threads/vpn-client-and-killswitch.74170/#post-707860. This script doesn't work while using x3mrouting. With this enabled in firewall-start script x3mrouting ipset rules do not bypass the vpn and go to wan. I would like a way for this script just to start when the vpn is down or stopped or at reboot when there is not initial vpn & then be removed when the vpn starts.