Quest item problem

Hello guys I would like to ask about something in Quests, I am trying to create a gather item quest I tried copying an old quest item like Curst heart (ITEM_QSP_ALL_POTION_1_02) and modifying its code / id , refobjitem id and added the modified line to itemdata_xxx but once I /makeitem the quest I get instant crash I tried adding the quest to a unique as drop but and its still crashing once the unique dies (the drop shows up) and of course it's not bsr drop so any ideas? ;/

you can make Quest by counting mobs or unqiues it's easy. but if you wana make Quest buy Drop item you shoud Change ID and Codes.like makeing new ITems Common and Item Then before adding item to Quest you should test it by Drop.