function()
    local health = UnitHealth("target")
    local time = GetTime()
    local oldhealth
    local helavah

    if oldhealth ~= health then
        oldhealth = health
        if health == UnitHealthMax("target") then
            health0, time0, mhealth, mtime = nil
            return
        end

        if not health0 then
            health0, time0 = health, time
            mhealth, mtime = health, time
            health0 = health0
            return
        end

        mhealth = (mhealth + health) * .5
        mtime = (mtime + time) * .5
        helavah = UnitHealthMax("target") * .35

        if mhealth >= health0 then
            health0, time0, mhealth, mtime =nil
        else
            time = (health-helavah) * (time0 - mtime) / (mhealth - health0)
            --  print(time)
            if(time<1) then
                REDS_WA_SOULREAP = false
                REDS_WA_SRTIME = math.floor(time + 0.5)
            elseif (time <= 6) then
                REDS_WA_SOULREAP = true
                REDS_WA_SRTIME = math.floor(time + 0.5)
            end
            return
        end
    end
end