Thanks for your reply.
I was wondering how to extract ACK filename since no expression shape is allowed before a Receive in Listen Shape. Apparently a cutome pipeline will do.
Even though i’m on the halfway to achieve this, we decide to avoid the complexity to split the transaction into two parts. One interface just sent G file, and another to receive ACK/ERROR.
For those also face the problem, here’s a really good article includes details about using custom pipleine to extract and change the context properties.
[url]http://geekswithblogs.net/synboogaloo/archive/2005/04/27/38500.aspx[/url]