def set_backend_register(self, k, v):
        br = {}
        try:
            br=json.loads(self.backend_register)
        except __HOLE__:
            br={}

        br[k] = v
        self.backend_register = json.dumps(br)
dataset/ETHPy150Open open-cloud/xos/xos/core/models/plcorebase.py/PlModelMixIn.set_backend_register