Can not enter temperature compensation to BSC IP65 12/5 Charger

[timo-san]

I have victron agm deep cycle 220Ah battery and BSC IP65 12/5 charger with most recent fw.

For some reason, when I enter to Victron Connect via my iphone, and try to set the temperature compensation for my vattery (expert settings) it has already the default -16,mV/C but it is shown on red and I cannot save/click OK button if value is negative. Positive values are accepted but when I click OK it resets as 0 / no compensation. Where is the problem?

[water_rat (klim8skeptic)]

Under battery preset “user defined”.
Try enabling temperature compensation.

[timo-san]

Nope, it just disables it if I set anything to this parameter. Negatives not accepted and 0 or positive turna conpensation disabled