SNIP

(Sorry for the sloppy code, but I think you get the picture. Try referencing your array like so to see if it is really there or not...)

Can you just return an object? This works for me:
See section: "Passing Complex types between Visual FoxPro and .NET:"
http://www.west-wind.com/presentations/dotnetfromVfp/DotNetFromVfp_ComplexObjects.asp

Another option, when I get a collection hanging on an object from .net (passed to VFP via an event firing), I have to reference it like so or else I cannot "see" it:

*--Event that is hooked up and fires:
PROCEDURE INETAPIEvents_QuestAnsEvent(arg AS VARIANT) AS VOID
*arg object is passed to vfp via com interop event firing  - it has collections as properties (remember it is zero-based in .net)
*VFP Code in event to see questions and answers collection passed from .net:
*arg object is passed to vfp via com interop event firing  - it has collections as properties (remember it is zero-based in .net)
*VFP Code in event to see questions and answers collection passed from .net:
IF TYPE("arg") = "O"  AND ...  && etc skip the stupid stuff you know
   IF TYPE("arg.myObject") = "O" AND TYPE("arg.myObject.myCollection") = "O" AND TYPE("arg.myObject.myCollection.count") = "N" AND arg.myObject.myCollection.COUNT > 0
	FOR I = 0 TO arg.myObject.myCollection.COUNT-1
		IF TYPE("arg.myObject.myCollection.ITEM[m.i].Questions") = "O" AND arg.myObject.myCollection.ITEM[m.i].Questions.COUNT > 0  && Are there questions and answers?
			FOR iq = 0 TO arg.myObject.myCollection.ITEM[m.i].Questions.COUNT - 1
				RELEASE loTemp
				loTemp = arg.myObject.myCollection.ITEM[m.i].Questions.ITEM[m.iq]
				IF TYPE('ALEN(loTemp.Answers,1)') = "N"
					FOR ia = 1 TO ALEN(loTemp.Answers,1)
						IF .F.
							DIMENSION laAnswers[1]
						ENDIF
						RELEASE laAnswers
						laAnswers = loTemp.Answers
					ENDFOR
				ENDIF