first of all I introduce me, my name is Alessandro and I am trying to start a server L2J. I premise that I am a systems analyst and not a developer, so I don't have big competences in development and... I apologize my basic english

I have downloaded and started the l2jserver, it works rather well. I have fixed some bugs intervening on the files. properties and. xml but for some of these I cat't find the way of resolving them.
The first one of these is that mentioned in the title of the topic, the crossbows should only use the bolts, instead they also allow the use of arrows.
Some idea on as to resolve?
Thanks in advance.