Question about spellup plugin for Aardwolf

I was wondering if there was a way to make the spellup plugin designed by Nick for Aardwolf check to see if the cast failed when using "spellup other <name>", just like it does when casting spells on yourself and make it do the same when casting on another. What I mean to say is, I'd like it to try the cast again if it fails on another player/mob. I'm not super-adept with scripts and such, so please try not to make any answers super-complicated if avoidable. Thanks all!

I am loooking into it - bear with me for a bit.

Alrighty, thanks Nick. =)