API C MapBar.GetMaxValue

__NOTOC__
Returns the amount of progress required to unlock the next phase of the current map.
 maxValue = C_MapBar.GetCurrentValue()
==Returns==
; maxValue : Number - progress required to unlock the next phase of the current map; nil if the current map does not use the map bar.
==Details==
* In cases when there is no next phase, this function returns an arbitrarily large value.
==Patch changes==
*
==See also==
*