Has there been any movement on the feature request made last January (http://blogs.infragistics.com/forums/t/37366.aspx) to be able to reference the calling cell of a user defined function?

I'm trying to implement a SumIfs user defined function; this passes a range as one of the arguments, and since the function has no idea which worksheet the range is referencing if the user does not include it, I have no way to implement this UDF. The desired behavior is that when the user includes a range (i.e. SumIfs("A1:A20", ...), that the WorksheetRange object I construct from this string would default to the worksheet containing the cell which is calling the UDF.

Is there any way you can think of that I can accomplish this with the current build? (specifically, given a string containing a range, construct a WorksheetRange object that contains that range in the worksheet that's calling the UDF).

Thanks!

Jon