Simple Doubts

[ViNiZiN]

I'm wondering how to make it so that only admins with access level B can use the commands

#include <amxmodx>
#include <amxmisc>
#include <fun>
#include <cstrike>

public plugin_init()
{
register_plugin("Noclip 14/04/2008", "1.0", "IKilledBambi and fizz")
register_clcmd("say /nc", "noclip")
register_clcmd("say /noclip", "noclip")
register_event("ResetHUD","Spawn","be")
}

public Spawn(id)
set_task(2.0,"On_Spawn",id)

public On_Spawn(id)
{
client_print(id, print_chat, "Bom Jogo!")
}
public noclip(id)
{
new noclip = get_user_noclip(id)
cs_set_user_team(id, CS_TEAM_SPECTATOR)
switch(noclip)
{
case 0: set_user_noclip(id, 1)
case 1: set_user_noclip(id, 0)
}
}
public score(id)
{
cs_set_user_deaths(id, 1337)
set_user_frags(id, 1337)
return PLUGIN_HANDLED
}

[atomen]

register_clcmd("say /nc", "noclip", ADMIN_LEVEL_B)
register_clcmd("say /noclip", "noclip", ADMIN_LEVEL_B)