Hybrid units and ATC

Hello, I choose “Hybrid” in the section “Units of measurement” of the general options, to have millibars instead of inches of mercury. But this change is not reflected in the ATC where the nice lady continue to give me the QNH in inches. Is there a possibility to change this? Thanks for your replies.

In a word No, at least I have not found a way to get ATC to recognise the change.