How i can fragment the payload message with zigbee s2?

I need send a picture using a camera with a zigbee s2, i need know how i can send a large payload?

The largest payload you can send with XBee ZigBee is 255 bytes, which is fragmented and sent as multiple packets through the RF, and reassembled by the receiver. This limit is imposed by the Ember network stack.

To send a larger ‘payload’, you will need to do your own fragmentation.