npc_shop Error

[Gimmbo]

Hi guys, im totally new at this editing server, and i come up ona problem and i couldn't find any solution on the internet or elsewhere. From files i got, i simply tried to edit one of npc that already are set up to sell items for CP (npc_4884,Competition Merchant) i tried to edit on of item , for an ex. instead of cuff i wanned to sell Mount or some other item, which ever npc i try to change what it sells same error pops up, and i could not find any reliable tutorial on how its done. I attach the pic of error, hopefully someone can help. thanks in advance !

 

[thunderpm]

make another npc then you edit it...try to learn the code as well..