[Mini Kossel Delta] G33 starts in opposite direction to G32/Bed Height Map routine?

Willysan

Hey guys, I just changed to repetier firmware from marlin.   I followed the video instruction from this link to calibrate my delta printer (https://www.repetier.com/documentation/repetier-firmware/z-probing/).  

I am curious why the starting point of G33 is opposite to G32 or "Bed Height Map".   G32/Bed Height Map starts at lower left hand corner under X-tower, but G33 starts at upper left hand corner beside x-tower.  

Is there something wrong in my setting? 

[Bed Height Map Setting]

x-min -20

y-min -50

x-max 70

y-max 75

x-point 4

y-point 7

[configuration.h]

#define DISTORTION_CORRECTION 1 

#define DISTORTION_CORRECTION_POINTS 7

#define DISTORTION_CORRECTION_R 50

#define DISTORTION_PERMANENT 1

#define DISTORTION_UPDATE_FREQUENCY 15

#define DISTORTION_START_DEGRADE 0.5

#define DISTORTION_END_HEIGHT 1

#define DISTORTION_EXTRAPOLATE_CORNERS 0

#define DISTORTION_XMIN 0

#define DISTORTION_YMIN 0

#define DISTORTION_XMAX 50

#define DISTORTION_YMAX 50

[EEPROM Setting]

Max printable radius: 80mm

Z-probe offset x : 31mm

Z-probe offset y : 31mm

Z-probe x1 : -20

Z-probe y1 : -50

Z-probe x2 : 65

Z-probe y2 : -30

Z-probe x3 : --65

Z-probe y3 : 65

Repetier

G32 and G33 just are complete independent each defining a separate region for testing, so this can happen it is no error.