Negative "Backflow Power"

[Schuggi]

Can you modify the "Backflow Power" setting so that negative values ​​can also be set? On my Solis Rai, this forces the battery to be charged from the grid . I tested the following code and it works.

{
                "name": "Backflow Power",
                "category": Category.AC_PORT_SETTING,
                "unique": "solis_modbus_inverter_backflow_power",
                "register": ["43074"],
                "device_class": SensorDeviceClass.POWER,
                "multiplier": 100,
                "unit_of_measurement": UnitOfPower.WATT,
                "data_type": DataType.S16,
                "editable": True,
                "default": 0,
                "min": -20000,
                "max": 20000,
                "step": 1,
            },

Regards Schuggi