Custom Character scripting

1. I modified Mage4 script to cast different spells. It works great but after casting about 6 fireballs it stops casting all the magic missiles that my char has memorized and just starts meleeing. How do I get it to keep casting until all do the spells are exhausted? I tried removing the melee script and same thing happens...he stops casting even tho he has some spells left but instead of meleeing he just stands there.

2. What is the command for scripting innate abilities? Does anyone have an example of the full script (IF, THEN, END) so I can try out some things?

I just started messing around with scripts and slowly figuring it out. It's very fun tho...thanks!