Checking a monster's condition, how do I do it? Options

[shinyjiggly]

I've been having a little bit of trouble with a skill that I'm trying to work on. I want it to only work on a monster when they are asleep.
But there's a problem with this because the conditional branch doesn't have an option to check a monster's condition. Even in the monster group event area it doesn't have anything that will let you activate something when a monster has a particular status affliction. Is there a way to get around this without having to dabble in patches?
I was thinking that maybe I could make the sleep-inducing move activate some switches or variables to track sleeping monsters but I think that might get a tad messy.