Minim OSD battery voltage incorrect

Hi everybody…Is there somewhere in the parameters of APM 3.2 that one can calibrate the battery voltage so that it reads accurately with the MinimOSD overlay?
Currently the reading are well out - 11.00v when the 3S battery is fully charged and at idle…Pearls of wisdom would be much appreciated. Thanks.

You do it like this: … ge_reading

Thanks Otherhand…
Amazing what one can learn if one just pays attention during setup!
Most grateful. Best DP.