#Business Process (BPL)

Hello, I am trying to get some fields from HL7 message and create a file using BPL.  The values I need are in a repeating segment (AIG).  Even in the repeating segment, I just want the iteration that has a certain field (AIG:3 populated).  With the help of documentation and community posts, I was able to create the BPL to loop through all of AIG and create the file.  But when I try to narrow the results even further (AIG:3 present), the process gets stuck.  I am not sure I am missing anything or have anything incorrectly set up.

I built a BP, that every time that a message is received from a BS, it executes 

 set##class

To save time, I was thinking of just creating a BS that goes out and gets the Authorization Token every hour. However then how to do I pull that Token into the BO to ensure that the Token is included in the Request that is sent to the HS.FHIRServer.Interop.HTTPOperation?

I am trying to centralize our FHIR queries into a single BP object that would send the FHIR query to the EMR, interpret the response into a %Persistent structure that could be sent back to the requestor. In theory it seemed like it would work but I am running into an issue..

"Warning on Message body 5@osuwmc.Epic.FHIR.DataStructures.PatientSearch.Record'
/ 229 because Status 'ERROR <Ens>ErrException: <PROPERTY DOES NOT EXIST>Transform+3 ^osuwmc.Scott.FHIR.DemoOutboundHL7Message.1 *DocType,osuwmc.Epic.FHIR.DataStructures.PatientSearch.Record -- logged as '-'

Using a Workflow Task within HealthShare Provider Directory, when a user clicks on Resubmit message within my Business Process, I check the status of the response. If the response is "Resend Message", I have my Business Process executing the following...

 set##class

the context.SessionID is the Session ID of the message as it is being pass thru the Business Process. Does anyone see why that would not work off hand?

Need to capture filename during BPL process, then set it to MSH-6 in the HL7 message.

Please advice, if this can be done.