Castle Paradox

[msw188]

I am using the stun register to mean 'asleep', and I would like certain attacks to have a chance to wake up the sleeper. I want to show a graphic and caption for this, but the problem is that I don't want this graphic/caption to show up if the target was NOT asleep. Right now we have chaining options based on the attacker, but not on the target. Furthermore, we have an option to have an attack fail if the target is stunned, but we don't have the option to fail if the target is NOT stunned.

Any ideas on how to accomplish something like this? Right now all I can think of is to make a long chain that absorbs some of the target's stun register, and then chains to the wakeup graphic/caption only if the attacker's stun register>0, which then chains to an attack to take away the attacker's stun register. But this seems like an awfully round-about way of accomplishing this. Does anyone have any other ideas by chance?
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My first completed OHR game, Tales of the New World:
http://castleparadox.com/gamelist-display.php?game=161

This website link is for my funk/rock band, Euphonic Brew:
www.euphonicbrew.com