Change attack element of a monster

[xMysth]

Hi.
Is it possible to change the element with which a monster attacks? I have already tried different ways and they only attack with a neutral element. 

I used this to guide me, but so far it hasn't worked for me, even with monster abilities.
https://github.com/rathena/rathena/wiki/Custom-Mobs

Thanks!!

[Humble_Bee]

Have you tried giving your monsters skills that change their weapon element? I know the taekwon class has a move that can do that, and there is an itemskill move that I believe has all the elements (The itemskill is called "ITEM_ENCHANTARMS", and if you can figure out what number that skill is, you could possibly add to a mob's skill list with a high % chance to use it). Outside of that, I did a dirty source mod that made it so that my monsters attack with neutral element 50% of the time and their defensive element 50% of the time. My code means that a dark monster would be using dark basic attacks 50% of the time.

[holleyhull]

Thanks for the detailed explanation