DBM countdown via lua

[10leej]

I currently use this script I found to run a coundown timer, but I'm wondering if there's a way I can call DBM's countdown function with this script as well

local defaultcdtime = 6
local channel = "RAID_WARNING"
 
local frame = CreateFrame("frame", nil)
SlashCmdList['COUNTDOWN'] = function(newtime)
    if newtime ~= "" then
        cdtime = newtime+1
    else
        cdtime = defaultcdtime+1
    end   
    local ending = false
    local start = floor(GetTime())
    local throttle = cdtime
    frame:SetScript("OnUpdate", function()
        if ending == true then return end
        local countdown = (start - floor(GetTime()) + cdtime)
        if (countdown + 1) == throttle and countdown >= 0 then
            if countdown == 0 then
                SendChatMessage('Pulling', channel)
                throttle = countdown
                ending = true
            else
                SendChatMessage(countdown, channel)
                throttle = countdown
            end
        end
    end)
end
SLASH_COUNTDOWN1 = "/inc"