@Planck:
Exactly.
In eventHandler
_this refers to the array of values that is passed by the eventHandler type into the script that the eventHandler executes...
So what Planck says is correct.
It never even occurred to me that you could be using the eventHandler the wrong way...
this AddEventHandler ["killed", {_this exec "court.sqs"}]
So this is how you need to do it...