MinSoCOnGrid setting failure with Fox Cloud

[Matt-E-G]

Running the Foxcloud inverter, after setting the schedule correctly Predbat tries to set the main MinSocOnGrid for the inverter. This seems to fail while the schedule is active at with a higher MinSocOnGrid within the schedule. At the end of the charging period, MinSocOnGrid then is then stuck at whatever the charging target was, so it doesn't discharge.

Fox: Debug: Setting scheduler for XXXXXXXXXXXX same=False current_enable=1 current_groups=[{'endHour': 16, 'fdPwr': 5000, 'minSocOnGrid': 100, 'workMode': 'ForceCharge', 'fdSoc': 100, 'enable': 1, 'startHour': 15, 'startMinute': 30, 'endMinute': 0}, {'endHour': 15, 'fdPwr': 6000, 'minSocOnGrid': 15, 'workMode': 'ForceCharge', 'fdSoc': 15, 'enable': 0, 'startHour': 14, 'startMinute': 28, 'endMinute': 59}, {'endHour': 23, 'fdPwr': 6000, 'minSocOnGrid': 15, 'workMode': 'ForceCharge', 'fdSoc': 15, 'enable': 0, 'startHour': 22, 'startMinute': 1, 'endMinute': 59}, {'endHour': 0, 'fdPwr': 5400, 'minSocOnGrid': 15, 'workMode': 'ForceCharge', 'fdSoc': 20, 'enable': 0, 'startHour': 0, 'startMinute': 0, 'endMinute': 0}, {'endHour': 0, 'fdPwr': 5400, 'minSocOnGrid': 10, 'workMode': 'ForceCharge', 'fdSoc': 10, 'enable': 0, 'startHour': 0, 'startMinute': 0, 'endMinute': 0}, {'endHour': 0, 'fdPwr': 5400, 'minSocOnGrid': 10, 'workMode': 'ForceDischarge', 'fdSoc': 10, 'enable': 0, 'startHour': 0, 'startMinute': 0, 'endMinute': 0}, {'endHour': 0, 'fdPwr': 0, 'minSocOnGrid': 10, 'workMode': 'SelfUse', 'fdSoc': 10, 'enable': 0, 'startHour': 0, 'startMinute': 0, 'endMinute': 0}, {'endHour': 0, 'fdPwr': 5400, 'minSocOnGrid': 10, 'workMode': 'ForceDischarge', 'fdSoc': 15, 'enable': 0, 'startHour': 0, 'startMinute': 0, 'endMinute': 0}] new_groups=[{'enable': 1, 'startHour': 15, 'startMinute': 30, 'endHour': 16, 'endMinute': 0, 'workMode': 'ForceCharge', 'fdSoc': 100, 'maxSoc': 100, 'fdPwr': 5000.0, 'minSocOnGrid': 100}]

Fox: API Request: path /op/v1/device/scheduler/enable post True datain {'deviceSN': 'XXXXXXXXXXXX', 'groups': [{'enable': 1, 'startHour': 15, 'startMinute': 30, 'endHour': 16, 'endMinute': 0, 'workMode': 'ForceCharge', 'fdSoc': 100, 'maxSoc': 100, 'fdPwr': 5000.0, 'minSocOnGrid': 100}]}

Fox: API Request: path /op/v0/device/setting/set post True datain {'sn': 'XXXXXXXXXXXX', 'key': 'MinSocOnGrid', 'value': 15, 'lang': 'en'}

Fox: Warn: Failed to set device setting for XXXXXXXXXXXX key MinSocOnGrid value 15, assuming not supported

Warn: Fox: Unsupported function code Unsupported function code:44096 from https://www.foxesscloud.com/op/v0/device/setting/set

Have I missed a flag to just leave the main MinSocOnGrid alone, so the system reverts to normal discharging when not scheduled to do something else? Or is there another way to manage this?
Predbat config.txt