qtdragon_hd: Cant set units to metric

Hi,

i try to get qtdragon_hd in metric mode.
in my .ini file i have: 
[TRAJ]
LINEAR_UNITS = metric

Debug output has the line
QTvcp.QTVCP.QT_ISTAT - DEBUG - Machine is METRIC based. unit Conversion constant=0.03937007874015748

Some of the menus have mm as units. 
However the main screen shows Units = IN. 

What is wrong with my config?
The qtdragon_hd sample configs with metric seem to work fine.

Qtdragon changes displayed units based on g20/21 modes

Thanks for your help, that was the problem