Custom Monsters Requiring /ns..? Client or Server?

[Reisama]

I'm unsure if this is client-side, or actually server-side, but is there a way to make custom monster that use a player sprite not require the player to hold shift (even when /ns is active) to use skills and attack?

[Earthlingz]

if mob id is too high/low it will be recognized as player. just adjust it a little higher than the last mobid.

[Reisama]

The last working mobid that doesnt require shift is 2201. The ones that require shift are 2202+. It makes no sense. Lol