Calculation-of-MFE-and-MAE

HI, I am testing the MFE, and the trade is buy from 511.83, and sell at 522.23.




the MFE show is 20,



i hope to better understand how to calulate the MFE in WL.

and when i test usdjpy 5 min, the MFE is 30. what is the unit of 30? 30 basic point or 30 point value?

thanks.