Lua Boss spawn

[Sizaro]

I want to make it so that whenever a specific boss spawns, it spawns with additional x creatures at x locations.

For example, when Man in the Cave has spawned, there are additional Ice Golems in the cave below him. Plus there are also unsummoned Monks with him.

local spawns = {
    -- Bosses
    [1] = {position = Position(2089, 2160, 15), monster = 'The Mad Mage'},
    [2] = {position = Position(1781, 2260, 6), monster = 'General Murius'},
    [3] = {position = Position(2294, 2266, 10), monster = 'Demodras'},
    [4] = {position = Position(1729, 2063, 9), monster = 'Dharalion'},
    [5] = {position = Position(2372, 2310, 7), monster = 'Fernfang'},
    [6] = {position = Position(2018, 2028, 7), monster = 'Man in the Cave'},
    [7] = {position = Position(2111, 1974, 11), monster = 'Necropharus'},
    [8] = {position = Position(1983, 1935, 7), monster = 'The Horned Fox'},
    [9] = {position = Position(1927, 2095, 8), monster = 'The Evil Eye'},
    [10] = {position = Position(2252, 1812, 7), monster = 'Treasure Goblin'},
    [11] = {position = Position(2269, 2282, 7), monster = 'The Old Widow'},

    -- PoI bosses
    [12] = {position = Position(2313, 2349, 15), monster = 'Countess Sorrow'},
    [13] = {position = Position(2356, 2287, 15), monster = 'Dracola'},
    [14] = {position = Position(2387, 2243, 15), monster = 'Massacre'},
    [15] = {position = Position(2277, 2220, 15), monster = 'Mr. Punish'},
    [16] = {position = Position(2304, 2254, 15), monster = 'The Handmaiden'},
    [17] = {position = Position(2364, 2302, 15), monster = 'The Plasmother'},
    [18] = {position = Position(2430, 2189, 15), monster = 'The Imperor'},
  
    -- New
    [19] = {position = Position(2029, 1955, 8), monster = 'Apprentice Sheng'},
    [20] = {position = Position(1876, 2107, 8), monster = 'Big Boss Trolliver'},
    [21] = {position = Position(1898, 2045, 12), monster = 'Grorlam'},
    [22] = {position = Position(2117, 2361, 10), monster = 'Rukor Zad'},
    [23] = {position = Position(2006, 2150, 7), monster = 'The Big Bad One'},
    [24] = {position = Position(2097, 2205, 11), monster = 'The Noxious Spawn'},
}
function onThink(interval, lastExecution, thinkInterval)
    if math.random(1000) > 999 then
        return true
    end

    local spawn = spawns[math.random(#spawns)]
    Game.createMonster(spawn.monster, spawn.position, false, true)
    print('(Boss) '..spawn.monster..' just spawned.')
    return true
end

 

[Xikini]

local spawns = {
    -- Bosses
    [1] = {
        {position = Position(2089, 2160, 15), monster = 'The Mad Mage'},
        {position = Position(2089, 2160, 15), monster = 'rat'},
        {position = Position(2089, 2160, 15), monster = 'cave rat'}
    },
    [2] = {{position = Position(1781, 2260, 6), monster = 'General Murius'}},
    [3] = {{position = Position(2294, 2266, 10), monster = 'Demodras'}},
    [4] = {{position = Position(1729, 2063, 9), monster = 'Dharalion'}},
    [5] = {{position = Position(2372, 2310, 7), monster = 'Fernfang'}},
    [6] = {{position = Position(2018, 2028, 7), monster = 'Man in the Cave'}},
    [7] = {{position = Position(2111, 1974, 11), monster = 'Necropharus'}},
    [8] = {{position = Position(1983, 1935, 7), monster = 'The Horned Fox'}},
    [9] = {{position = Position(1927, 2095, 8), monster = 'The Evil Eye'}},
    [10] = {{position = Position(2252, 1812, 7), monster = 'Treasure Goblin'}},
    [11] = {{position = Position(2269, 2282, 7), monster = 'The Old Widow'}},
   
    -- PoI bosses
    [12] = {{position = Position(2313, 2349, 15), monster = 'Countess Sorrow'}},
    [13] = {{position = Position(2356, 2287, 15), monster = 'Dracola'}},
    [14] = {{position = Position(2387, 2243, 15), monster = 'Massacre'}},
    [15] = {{position = Position(2277, 2220, 15), monster = 'Mr. Punish'}},
    [16] = {{position = Position(2304, 2254, 15), monster = 'The Handmaiden'}},
    [17] = {{position = Position(2364, 2302, 15), monster = 'The Plasmother'}},
    [18] = {{position = Position(2430, 2189, 15), monster = 'The Imperor'}},
   
    -- New
    [19] = {{position = Position(2029, 1955, 8), monster = 'Apprentice Sheng'}},
    [20] = {{position = Position(1876, 2107, 8), monster = 'Big Boss Trolliver'}},
    [21] = {{position = Position(1898, 2045, 12), monster = 'Grorlam'}},
    [22] = {{position = Position(2117, 2361, 10), monster = 'Rukor Zad'}},
    [23] = {{position = Position(2006, 2150, 7), monster = 'The Big Bad One'}},
    [24] = {{position = Position(2097, 2205, 11), monster = 'The Noxious Spawn'}}
}
function onThink(interval, lastExecution, thinkInterval)
    if math.random(1000) > 999 then
        return true
    end
   
    local spawn = spawns[math.random(#spawns)]
    for i = 1, #spawn do
        Game.createMonster(spawn[i].monster, spawn[i].position, false, true)
    end
    print('(Boss) '..spawn[1].monster..' just spawned.')
    return true
end