Mi(Xiaomi) Smart home bindings?

I found out the Curtain item has a event , which will cause the whole binding stop working.

Sometimes the curtain motor will report the value “-1”, i have to reset the curtain myself,

Item got update: {“cmd”:“read_ack”,“model”:“curtain”,“sid”:“158d00012d69e7”,“short_id”:56211,“data”:“{"voltage":3600,"curtain_level":"-1"}”}

Though the value range is 0-100, but sometimes when the curtain motor stuck, it will send -1

the -1 will crash the whole binding.

Please check.

Thanks.