I already have a way of storing what I want to attack in a variable, and can verify that's successful. All I need to know is how to properly cast at something with the name I've stored in said variable. Example
Var1 = "Jimmy" /cast [@Var1] Heal
The above obviously doesn't work, but I hope it shows what I'm trying to do.
No, I can't just target the thing I'm casting on. No, I can't just use focus, as I need focus for something else. The point is to maintain my current target and focus, and still cast on something else without something like a mouseover macro.