Hmm, do you want to know something interesting?

I just tried to access the overloaded method through VBA on a Excel macro. Well, the call for the first method´s signature defined works fine; but the call to the second one, not (it gives me a SOAP mapping error, saying that´s a type mismatch).

So, I still didn´t figure out whether that´s a problem on the SOAP Toolkit, on in .NET.