No, David, it does not work.

First of all, the VB example shows passing variables to the DLL function by reference, while your code presumes passing by value. The problem is that even when I included @ in front of the variable names which forces passing parameters by reference, I got the same exception error.
Apparently the dinamic string in VB and some other Basic dialects, the language in which the DLL in my case is written,and, perhaps, in Delphi is not the same thing as the dynamic string in VFP. Only people from Microsoft can clarify this, at least with respect to both of their products: VB and VFP.

Thank you for your response.

Joshua