Lua getExperienceForLevel for 1.2

[Himii]

I cant find anything to use instead of the 0.4 function getExperienceForLevel
Is there anything you guys know about?

EDIT::

Added:

function getExperienceForLevel(level)
        level = level - 1
        return ((50 * level * level * level) - (150 * level * level) + (400 * level)) / 3
end

In Global.lua
(Found this in a support thread so not done by me)