is it possible to hide npc?

hello.. im having a hard time locating npc in the ragnarok im playing when im searching for the location of NPC in a certain location it does not display anything but when i open the client itself there are NPCs that surrounds my character....

can someone help me? :confused::confused::confused:

stand at next to the npc type /where and press enter
this is your location! now you can guess what the location of the npc is! ;)

yeah i know how to use /where.. actually i found the location of the warp npc but when i run openkore the bot says "could not find the npc".. and openkore has a this function which is "NL" that displays the list of npc in the screen right?.. but when use this function openkore displays nothing... ^ ^

wrong servertype? if not receivpacketlenghtthing xD

hmmm i tried using packet length extractor that aimless angel posted and pinned. but when i hook it on the RO client executable file it prompts file format not recognize... > . <
hmm let me check about the server type... thnx ^ ^