Define a Boolean variable, object scope, call it something like “IsVehicle”

On player enter vehicle - > set Boolean variable “IsVehicle” to True, but sure you’re setting that variable on the vehicle, not the player.

Area monitor - > on object entered area -> Branch (if condition “IsVehicle” == false) -> damage object 1000; if true do nothing

What’s happening here is when a player enters a vehicle, it’s change that vehicles variable to True, not the player, so when vehicle enters the area monitor it’s showing True so it’s not damaging them, if they get out the vehicle the players variable is false, so they die.