I´ve tried your code:

#define LEFT_PROBE_BED_POSITION MIN_PROBE_EDGE + 10
#define RIGHT_PROBE_BED_POSITION (X_BED_SIZE - (MIN_PROBE_EDGE + 10))
#define FRONT_PROBE_BED_POSITION MIN_PROBE_EDGE + 15 // 8 For Your Sensor
#define BACK_PROBE_BED_POSITION (Y_BED_SIZE - (MIN_PROBE_EDGE)) // + 10 For Your Sensor

But it gives me an error message, maybe it´s called differently in 2.0