Context Object Not Found In The ID

hi all,

I want to execute the SAP Exchange Infrastructure demo examples on the basis of SAP XI 3.0.

Doing by flow the configuration guide all it seems ok, but went to add the routing conditions to the receiver determination during configuring the business scenario, i cannot see the context object AirlineID which has designed in IR in the dropdown list box.

Can some body tell me why and how to get it?

Regards

Terry