A lot of ability

Hi all, I've a problem: I want to give to the heroes the chance to learn more than 4 skills. So I created a skill by taking the spell book as the basis of ability. The problem arises when the hero learns a skill, how do I put it in the book? Is possible to do it without a jass code?
Thanks

If I remember correct, you need to create a copy of your existing spellbook, with the same id. But in the copy you only add the ability you want to add to the right spellbook.

Then with triggers you add the copy spellbook to the unit.

Else search on www.wc3c.net, and know vexorian explained how to do.

So for 3 ability with 3 lvl I should create 27 spell book? xD