Status change notification from the IAS sensor

i have an xbee device and a smartthings multi purpose sensor.
and i’m developing a driver which acts like the smartthings hub.
I’m sure this multipurpose sensor is a IAS device.

In my code, i sent
’write attribute request’,
‘binding request’,
‘match descriptor request’,
and ‘enroll request’ all of them with correct values,
and i received 00 success.

but the sensor never give me ‘the status change notification’ even i let the sensor detects something.

Is there missing in my code? or could you give me any helpful advice?
Thanks to read!