Anyone know why the won't work?

Anyone know why the won't work?

Code:

PacketPlayOutNamedEntitySpawn packetPlayOutNamedEntitySpawn = new PacketPlayOutNamedEntitySpawn(((CraftPlayer) player).getHandle());
         
            try {
                Field b = packetPlayOutNamedEntitySpawn.getClass().getDeclaredField("b");
                b.setAccessible(true);
                b.set(packetPlayOutNamedEntitySpawn, new GameProfile(player.getUniqueId(), "test"));
            } catch (Exception exception) {
                exception.printStackTrace();
            }
         
            ((CraftPlayer) player).getHandle().playerConnection.sendPacket(packetPlayOutNamedEntitySpawn);

thanks

EDIT: I'm trying to change the player's nametag

 

@JackSparrrow Are you running 1.8?

 

Yeh

 

@JackSparrrow There is no GameProfile field.

 

Ohh, okay. How would I go about doing it then?

 

@JackSparrrow I'm not sure what each field is for. Just create a new EntityHuman instance with the properties you like.