Add to SpellBook

Well this has certainly been asked thousands of time before but i could'nt find it.

Is it possible to add an ability to a spellbook without jass?

And if thats possible, how?

The spellbook ability has a field called Abilities. I feel nice so I made a screenshot:

Hidden information:

You must have a maximum and minimum amount matching EXACTLY how many spells you have.

i think he wants to know how to add abilities during the gameplay ...

Yhea of course -.-

he mean using GUI...

Add a hidden spell book with the same order ID and the desired ability to add in it. Hide the spell book by disabling the spell book ability for the player.

http://www.wc3campaigns.net/showthread.php?t=80186

Atleast try to figure it out yourself. If you really can't, then ask for help.

Thx everybody...

But now i got a new problem, when a hero reach level 5, 10, 15, 20, 25 and 30 it gains a new random skill into the spell book, now comes the problem; How to fix so a unit cant learn the same skill 2 times?

Pick a random ability, check if the unit has the ability. If it doesn't, add it, otherwise repeat from the beginning.

Well how can i check if the unit has a random ability?

Level of (ability) for (unit) > 0?