Skript Problem

i did this script by a youtuber called Bugz and it won't work ON MCreator

command spawnmob [<text>] [<integer>]:
    permission: op
    trigger: 
    if arg-1 and arg-2 is set:
    spawnmob(arg-1, player,arg-2)
    else:
    send "&cInvalid arguments! Usage: /spawnmob <name> <hp>" to player 
    function spawnmob(m: text, p: player, hp: integer):
    if {_m} = "zombieking":
    spawn 1 zombie at {_p}
    set {_e} to last spawned entity
    equip {_e} with golden helmet and netherite chestplate and diamond leggings and netherite boots and netherite axe
    set max health of {_e} to {_hp} / 2
    heal {_e} 
    if {_m} = "zombieguard":
    spawn 3 zombie at {_p} 
    set {_e} to last spawned entinty
    equip {_e} with iron helmet and iron chestplate and golden leggings and iron boots  and stone sword
    set max health of {_e} to {_hp} / 2
    heal {_e}