200 + Summon

The below code is supposed to summon a familiar every 30 min, however it only summons the familiar once and after the 30 min it doesn't attempt to re-summon. Any ideas what wrong?

Code:

---

auto(1800000)

local UseSummon = true
local Sections = {"Hunt"} -- {"Hunt"} or {"Floor 1", "Floor 2"} etc...

--=======================================

local function SUMMON()
        if $vocshort == 'K' then
                summon = 'utevo gran res eq'
        elseif $vocshort == 'P' then
                summon = 'utevo gran res sac'
        elseif $vocshort == 'S' then
                summon = 'utevo gran res ven'
        elseif $vocshort == 'D' then
                summon = 'utevo gran res dru'
        end
        return summon
end

if $connected then
        if UseSummon and $level >= 200 then
                cast(SUMMON())
                wait(300,500)
        end
end

---

why won't you just use it like that

HTML Code:

---

auto(200)
if $wptsection == "cave" then
cast('utevo gran res sac')
wait(1805000)
end

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