The closest thing ASHLIE found to a "programming language", as it were, seemed to be a hybrid between
Whenever,
Ook, and
Malboge. Suffice it to say, anything complex would take even ASHLIE a long time to figure out, though it's far from impossible. It's simply not trivial. Considering even a 'normal' human has hundreds upon hundreds of different muscles, and that Will is capable of both a finer level and wider range of movement and effects on even the molecular level, there were a lot of variables to take into account.
Trial and error might be the order of the day. That, and possibly simplification.