Average cell voltage on the OSD

Hi everyone,
I have an Omnibus F4 and would like to see the average cell voltage (rather than the sum) on the OSD. Is there some way to do this? OSD1_CELLVOLT_EN doesn’t show anything for me.

I would like to do the same and searching if its possible.
But i believe OSD1_CELLVOLT_EN is only valid for MSP OSD.