How to include wildcard in FTP adapter header variable?

Question

I have two partner links that use FTP adapters. The first one puts a file on the FTP server. It specifies a dynamic outbound file name based upon an input variable and the timestamp in the format "test_BATCHID_yyyyMMddHHmmss.csv" (e.g. test_1011_20050925153059.csv). This part works as expected.
The second partner link is supposed to pick up a file on the same FTP server. This inbound filename will be based upon the outbound filename and another timestamp in a format such as "originalfilename.yyyyMMddHHmmss.txt" (e.g. test_1011_20050925153059.csv.20050926091541.txt). I have created a Transform action with a mapping to convert the outbound filename and assign it to the inbound header variable. It concatenates the outbound filename and ".*.txt" within the mapping. The inbound header shows up as test_1011_20050925153059.csv.*.txt in the audit, but the process hangs at the receive activity and the file never gets retrieved. Perhaps the asterisk is being interpreted literally?
Does anyone know how to specify a wildcard character in an xpath expression in a way that it will be interpreted as a true wildcard? Or is there another way to tell the inbound adapter to look for a dynamic filename using wildcards?

Answer 1

BPEL patch 1 supports performing a synchronous read using a BPEL invoke activity. The following forum post shows how to configure a read adapter manually.
Re: Help! Three questions about FileAdapater.
The subsequent patches of JDeveloper allow such an apdater to be configured automatically.
ps: This adapter can be used to read a single file only i.e. you cannot use a wild character.