#dim are easier to notice, as they are different from the usual set.

Check point 2 in this article  by @Sean.Connelly.

I do not think that it's possible.

If display values are unique, you can build a unique index and use it to translate display value into id.

You can subclass Ens.ContextSearch to provide dynamic settings lists. Docs.

Here's a sample class  that adds ability to select XData in Ensemble setting.

/// Ensemble settings interface implementation
Class Package.EnsSearchUtils Extends %ZEN.Portal.ContextSearch
{

///Get class Xdata list.
ClassMethod GetXDatas(Output pCaption As %String, Output pTopResults, Output pResults, ByRef pParms As %String, pSearchKey As %String = "") As %Status
{
    Set tStatus = $$$OK
    Kill pResults, pTopResults
    Set pCaption = ""

    Set tClass = $get(pParms("class"))
    If tClass '= "" {
        Set tClassObj = ##class(%Dictionary.CompiledClass).%OpenId(tClass)

        For i=1:1:tClassObj.XDatas.Count() {
            Set pResults($i(pResults)) = tClassObj.XDatas.GetAt(i).Name
        }
    }
    Quit tStatus
}

}

For example to add a setting XSLTTransformation to BH that would allow me to choose on XData from my Package.XSLT class, I can specify SETTINGS parameter like  this:

Parameter SETTINGS = "XSLTTransformation:Basic:selector?context={Package.EnsSearchUtils/GetXDatas?class=Package.XSLT}";

You should not modify system classes.

So without

Set httpRequest.SSLCheckServerIdentity=0 

it doesn't work?

You seem to receive empty response.

What does

set resp = httpRequest.HttpResponse
zwrite resp
write !,!,!
do resp.OutputToDevice()

Output?

What's the output on:

zwrite httpResponse

Check that stream is an object and contains relevant data:

write $isObject(httpResponse)

what data does it contain:

do httpResponse.OutputToDevice()

if it's not an object - what is it?

zwrite httpResponse

If everything is okay - stream contains what you expect it to contain, then what is the status of convert operation:

Set sc = ##class(%ZEN.Auxiliary.jsonProvider).%ConvertJSONToObject(httpResponse,,.Object,1)

write $System.Status.GetErrorText(sc)
zwrite Object

parent for index means class.

Try:

set st = ##class(%ZEN.Auxiliary.jsonProvider).%ConvertJSONToObject(responseStream,,.obj,1)

obj would become %ZEN.proxyObject. You can also create a class and parse json into object of that class.

Is

1POST /test/ HTTP/1.1 

actually a part of the request body?

If so, it's invalid json and you need to remove it from request body. What does

do httpRequest.EntityBody.OutputToDevice()

shows right before  sending the request?

Other thought, iin property should be passed as string, not as number. To do that:

1. Create a class

Class MyApp.Request Extends %RegisteredObject {

Property iin As %String;

... other properties ...

}

2. After that instead of %ZEN.proxyObject use this object as a request body.

Note that %ZEN.Auxiliary.jsonProvider:%WriteJSONStreamFromObject method has a pFormat argument, which defaults to aceloqtw in %ObjectToJSON method. One of the flags, q  means  output numeric values unquoted even when they come from a non-numeric property and you don't need that.

So your code should look something like this:

Set Object = ##class(MyApp.Request).%New()
Set Object.iin="123132132"
Set Object.firstName=name
Set Object.lastName=surname
Set Object.middleName=middlename
Set Object.birthDate=birthDate
Set Object.contractType="Z001"
Set sc = ##class(%ZEN.Auxiliary.jsonProvider).%WriteJSONStreamFromObject(httpRequest.EntityBody, Object, , , , "aelotw")
Set sc = httpRequest.Post("", 2)

Can you show the request itself via:

Set sc = httpRequest.Post("", 1)