Jakarta - World capital tower correction

[Alphard]

http://skyscraperpage.com/cities/?buildingID=35969

Name : World Capital Tower
Status : Under Construction
Height : 244.3 m (blueprint Screenshot https://imagizer.imageshack.us/v2/821x313q90/538/3853b9.png from http://www.skyscrapercity.com/showthread.php?t=1521704&page=9)

[Dylan Leblanc]

Can we confirm that the start point for the measurement, at the bottom of the tower, begins at 0 m, and not at the elevation above sea level?