Oops, instead of hr.SetParam() try hr.InsertFormData("name","value").

This works for me:

USER>set req=##class(%Net.HttpRequest).%New()
USER>set req.Server = "blah.org"
USER>do req.SetParam("name","value")
USER>do req.Post("method",1,0) // 2nd param is output to current device; 3rd is no reset


POST /method?name=value HTTP/1.1
User-Agent: Mozilla/4.0 (compatible; InterSystems IRIS;)
Host: blah.org
Accept-Encoding: gzip
Content-Length: 0

The one time I had a similar issue was when I had exported an LDAP configuration and imported it to another server. I was using instance-based role assignments and I had neglected to change the Authorization Instance ID to match the AD-defined roles for the server I was importing to.

A <code> section would work, but if you're going to use this regularly within your DTLs, it might make sense to create a custom method that would be available through the Function drop-down list in the DTL Editor. For Example:

Class User.Test.FunctionSet Extends Ens.Util.FunctionSet
{
/// Unescapes the field value provided in <var>pPath</var> and returns it as a String.
ClassMethod UnEscapeHL7(pPath As %String, pSeps As %String = "|^~\&", pEsc As %String = "\") As %String
{
    Return ##class(EnsLib.HL7.Segment).UnescapeEx(pPath, pSeps, pEsc)
}
}

Call it like this (replacing the field in my example with the field containing your note comment):

I've updated the method to optionally accept separators and the escape character as arguments; you would use source.Separators and source.ESC to override the default values with the ones supplied in the source message.

Can you show us an example of how you're calling the method? There is no IRIS/Caché limit on the size of the stream, but it appears that some sort of string operation may be getting in the way.

I don't have a request of type EnsLib.EDI.XML.Document handy to test, but I do know that setting the Source property of the request (for an HL7 message, at least) to the desired filename will enable you to use the %f formatting token to obtain the Source contents as the filename. This should theoretically allow you to use the unmodified EnsLib.EDI.XML.Operation.FileOperation class ...

If the length of the encoded PDF is less than MAXSTRING (roughly 3.6MB) it will be populated in the message as type %String. Otherwise it's a %Stream.GobalCharacter, and working with them using property paths in many of the IRIS functions will cause problems. GetFieldStreamRaw() guarantees you have a stream to work with.

Things may work out fine with your current code, but I've always taken the precaution of making sure I'm working with a stream when there's a chance the field content may be large.

You can change the message DocType, but you can't change the message content:

HICG > s msg=##class(EnsLib.HL7.Message).%OpenId(7463)
HICG > w msg.IsMutable
0
HICG > w msg.DocType
2.3.1:ORU_R01
HICG > s msg.DocType="2.5.1:ADT_A01"
HICG > d msg.%Save()
HICG > w msg.DocType
2.5.1:ADT_A01
HICG >

Unfortunately there's no easy way to "reset" the source document type in the DTL editor dynamically. You could, however, dynamically set the document type in either a BPL or COS business process and then invoke the appropriate DTL for translation.

The class query MemberStatusList in SYS.Mirror (found in the %SYS namespace) will give you a list of mirror members and some useful status information:

%SYS>d ##class(%ResultSet).RunQuery("SYS.Mirror","MemberStatusList")

Member Name:Current Role:Current Status:Journal Transfer Latency:Dejournal Latency:Journal Transfer Latency:Dejournal Latency:Display Type:Display Status:
MDCHCNDBSL1.HICGRP.COM/STAGE:Primary:Active:N/A:N/A:N/A:N/A:Failover:Primary:
MDCHCNDBSL2.HICGRP.COM/STAGE:Backup:Active:Active:Caught up:Active:Caught up:Failover:Backup:
CDCHCNDRSL.HICGRP.COM/STAGE:Async:Async:Caught up:Caught up:Caught up:Caught up:Disaster Recovery:Connected: