Hi,

Have you tried to make the namespace a binary value and pass the user and password as a parameter?

s Attr3=$lb(128,"intersystems-Namespace",$lb("%SYS"))
 s Attr4=$lb(0,"intersystems-Routine",$lb("iscRoutine"))
 s Attr5=$lb(0,"intersystems-Roles",$lb("iscRole1","iscRole2"))
 s Attr6=$lb(0,"userPassword",$lb(password))
 s Attr7=$lb(0,"cn",$lb("test20"))
 s Attr8=$lb(0,"uidNumber",$lb(58129))
 s Attr9=$lb(0,"gidNumber",$lb(58129))
 s Attr10=$lb(0,"homeDirectory",$lb("/home/test20"))
 s Attributes=$lb(Attr1,Attr2,Attr3,Attr4,Attr5,Attr6,Attr7,Attr8,Attr9,Attr10)
 s Status=##Class(%SYS.LDAP).AddExts(LD,DN,Attributes,"","")
 i Status'=$$$LDAPSUCCESS w !,"AddExts error: "_Status_" - "_##Class(%SYS.LDAP).Err2String(Status) g LDAPError

You can see an example of that on LDAP.mac on Namespace Samples.

I hope that helped you

"So then if I store the Injection element_key (in the case of an array), as a property in the ImageFile object which references the injection, I will be able to get to the various Injection properties from the ImageFile instance? "

Sure, just to pay attention to manage the array key, that will be like your ID

"What would I store in the ImageFile in the case of a list? "

You can use list like a collection, could be of %SerialObjects or other types like %Strings, in the table will be save like $Piece in the column

Sorry for delay...

You can use both, as a list you will use the insert method like a relationship

Set inj = ##class(PET.Injection).%New(), inj.Desc = "blabla "_i
Do study.Injection.Insert(inj)

It will add a column with the list

You can use an array, but you must use SetAt:

Do study.InjectionArr.SetAt(inj,i)

And it will create another table with the name of the property