itemStack.setStackDisplayName("custom name");

System.out.println(itemStack.getDisplayName());

System.out.println(this.worldObj.isRemote);

 

that's gonna print "custom name" and "false" in the console

but its showing up the usual itemstack name in minecraft instead of "custom name"

What am i doing wrong?

my god im dumb, forget bout this post

			itemStack.setStackDisplayName(name);
		itemStack.setTagCompound(nbt);

 

I gotta get to bed

Show more of your code. where are you doing this?